Why This Recipe Works

One marinade, two jobs: The same yogurt-lemon mixture both tenderizes the chicken and forms the base of the tzatziki, saving time and dishes.
Even cooking guarantee: Uniform 1-inch cubes and staggered veggies ensure every component finishes at the same moment.
Meal-prep genius: Skewers slide off their sticks into containers, making portioning a 30-second task on Sunday night.
Macro-balanced: 32 g protein, complex carbs from veggies, and heart-healthy olive oil keep you full until dinner.
Freezer-friendly: Raw marinated chicken cubes freeze flat; thaw overnight and grill the next evening.
Kid-approved rainbow: Bright peppers and purple onion make the skewers look like edible confetti—no bribes required.

Ingredients You'll Need

Great Greek flavor starts with shopping smart. Look for plump, never-frozen chicken breasts that feel firm and have a barely-there sweet smell. I buy mine from a local butcher who trays them the same morning; if you’re at a grocery store, check the “packed on” date and aim for within 24 hours. Greek yogurt must be whole-milk and strained (I use Fage 5 % for its silky texture), because the whey in regular yogurt will thin the marinade and prevent that gorgeous char. When you pick bell peppers, choose ones with taut, glossy skins—wrinkles signal age and bitterness. English cucumbers are seedless and less watery than garden varieties, keeping your tzatziki thick enough to mound on a spoon. Finally, buy a block of authentic sheep’s-milk feta swimming in brine; the pre-crumbled stuff is coated with anti-caking powder that dulls flavor. If dill is out of season, swap in fresh mint or parsley, but keep the ratio modest so the tzatziki doesn’t taste like toothpaste.

How to Make Healthy Meal Prep Greek Chicken and Veggie Skewers with Tzatziki

Make the dual-purpose marinade

In a medium bowl whisk ¾ cup Greek yogurt, ¼ cup extra-virgin olive oil, zest and juice of 2 lemons, 3 minced garlic cloves, 2 tsp dried oregano, 1 tsp kosher salt, and ½ tsp freshly ground black pepper. Reserve ½ cup of this mixture in a separate container for the tzatziki base; you’ll add the cucumber later.

Cube and coat the chicken

Pat 2 lb (about 4 medium) chicken breasts dry, then slice into 1-inch cubes. Slide the chicken into a gallon-size zipper bag, pour in the remaining marinade, seal while pressing out excess air, and massage to coat every piece. Refrigerate at least 30 minutes or up to 24 hours; longer equals deeper flavor.

Prep the rainbow veggies

Core and seed 2 red bell peppers and 1 yellow bell pepper, then chop into 1-inch squares. Peel 1 red onion, slice into 8 wedges, and gently separate the layers. Slice 1 zucchini into ½-inch coins. Place veggies in a bowl, drizzle with 1 Tbsp olive oil, and season with a pinch of salt and oregano.

Build the skewers

If using wooden skewers, soak them in water for 20 minutes to prevent scorching. Thread chicken and veggies in an alternating pattern—start with chicken (it takes longest to cook), then pepper, onion, zucchini, and repeat, finishing with chicken. Leave ¼ inch between pieces so heat can circulate.

Preheat grill & oil grates

Heat a gas grill to medium-high (425 °F/220 °C) or light a charcoal chimney until the coals are glowing with a thin layer of ash. Dip a folded paper towel in a small bowl with 2 Tbsp oil and, using tongs, rub it across the grates until glossy. This creates a non-stick surface and picture-perfect grill marks.

Grill to juicy perfection

Arrange skewers perpendicular to the grates, close the lid, and cook 4 minutes. Rotate 90 ° for crosshatch marks, cook 3 more minutes, then flip and repeat until the thickest piece of chicken registers 165 °F (74 °C) on an instant-read thermometer. Total time is about 12–14 minutes.

Rest and de-skewer

Transfer skewers to a clean platter, tent loosely with foil, and let rest 5 minutes so juices redistribute. For meal prep, slide the chicken and veggies off the sticks into a large bowl; this prevents rubbery chicken from continued carry-over heat and makes portioning faster.

Finish the tzatziki

Grate half an English cucumber on the large holes of a box grater, wrap the shreds in a clean kitchen towel, and squeeze until almost dry. Stir the cucumber into the reserved yogurt along with 1 Tbsp chopped fresh dill, 1 tsp red-wine vinegar, and a pinch of salt. Chill until ready to serve.

Portion into containers

Spoon ¾ cup cooked quinoa or brown rice into each of four glass containers, top with one-quarter of the grilled chicken and veggies, and add a 2-Tbshot of tzatziki in a leak-proof mini cup. Garnish with extra dill and a lemon wedge. Refrigerate up to 4 days or freeze up to 2 months.

Expert Tips

Temp your chicken

An instant-read thermometer is the only foolproof way to avoid dry chicken. Insert it horizontally into the center of the largest cube, away from the skewer.

Squeeze cucumbers thoroughly

Removing excess water prevents runny tzatziki. If you’re in a rush, use seedless cucumbers and press between paper towels.

Marinate overnight

A full 24-hour soak allows lactic acid in yogurt to tenderize the meat, giving you restaurant-level juiciness even if you accidentally overcook by a minute.

Reuse marinade safely

Because the reserved yogurt never touched raw chicken, it’s safe to repurpose. If you want basting sauce, boil the used marinade 3 minutes first.

Flash-freeze raw skewers

Thread and freeze on a parchment-lined sheet pan; once solid, transfer to a freezer bag. Grill from frozen, adding 3–4 extra minutes.

Add smoky paprika

For a deeper flavor, whisk ½ tsp smoked paprika into the marinade. It lends a subtle campfire note without overpowering the herbs.

Variations to Try

Shrimp & Veggie: Substitute 2 lb large shrimp (peeled, tail-on) and reduce grill time to 2 minutes per side.
Low-carb: Swap peppers and onions for zucchini rounds, cherry tomatoes, and whole mushrooms; serve over cauliflower rice.
Spicy kick: Add 1 tsp Aleppo pepper or ½ tsp cayenne to the marinade; garnish with thin Fresno chile rings.
Dairy-free: Replace yogurt with ¾ cup coconut cream and 1 Tbsp lemon juice; use tahini-lemon sauce instead of tzatziki.
Pescatarian: Use cubed swordfish or salmon; marinate only 30 minutes since acid cooks fish.
Weeknight sheet-pan: Skip skewers; spread everything on a rimmed sheet and roast at 425 °F for 18 minutes, stirring halfway.

Storage Tips

Grilled chicken dries out when stored too long, so follow the 4-day rule. Let the meat cool completely before sealing containers; trapped steam equals soggy veggies and potential bacteria growth. I prefer glass bento boxes because they don’t absorb garlic odors, but BPA-free plastic works if you avoid microwaving in it. Pack tzatziki in 2-ounce screw-top jars (the kind coffee shops use for cream) and nestle them upright so they don’t leak. If you plan to freeze, skip the cucumber sauce—dairy separates when thawed. Instead, freeze the grilled chicken and veggies in a single layer, then make fresh tzatziki while the packets reheat in a skillet with a splash of water. Reheat refrigerated skewers in the microwave at 70 % power for 90 seconds, or enjoy cold straight from the fridge; the flavors actually intensify overnight.

Frequently Asked Questions

Absolutely. Boneless, skinless thighs are more forgiving and will stay juicier if you accidentally overcook. Trim excess fat and cube the same size; grilling time is identical.

Use a grill pan on the stove over medium-high heat, or broil on a foil-lined sheet pan 6 inches from the element, turning every 3 minutes. An air-fryer set to 400 °F for 10 minutes also works—shake halfway.

Soak at least 20 minutes, but for meal prep I soak an hour while the chicken marinates. You can also wrap the exposed ends in small squares of foil.

Yes, every ingredient is naturally gluten-free. If serving with pita, choose certified GF bread or go low-carb with lettuce wraps.

Definitely. Double all quantities but marinate in two separate bags so the chicken stays well-coated. Grill in batches, keeping finished skewers on a sheet pan in a 200 °F oven until serving.

Cucumbers continue to release moisture. Salt and drain them, then stir in 1 tsp cornstarch or use Greek yogurt labeled “extra strained.” Stir just before serving to re-incorporate any liquid.

Healthy Meal Prep Greek Chicken and Veggie Skewers with Tzatziki