1. Marinate the Chicken (Implied Step):
- Cut chicken breasts into bite-sized pieces or leave whole for grilling/searing.
- In a bowl, combine chicken with approximate marinade ingredients: lemon juice, minced garlic, dried oregano, a drizzle of olive oil, salt, and pepper.
- Toss to coat well. Let marinate for at least 30 minutes (or longer in the refrigerator).
2. Cook Quinoa (if needed):
- Cook quinoa according to package directions if you don’t have pre-cooked quinoa. Keep warm or let cool slightly.
3. Make the Tzatziki Sauce:
- In a small bowl, whisk together the Greek yogurt, 1 tablespoon of lemon juice, and the minced garlic. (Stir in 1 tbsp chopped fresh dill here if using).
- Season with a pinch of salt and pepper if desired. Set aside (can be made ahead and refrigerated).
4. Cook the Chicken:
- Heat a grill or large skillet over medium-high heat. Add a touch of oil to the skillet if using.
- Remove chicken from marinade (discard excess marinade).
- Grill or pan-sear the chicken until cooked through (internal temperature 165°F/74°C) and nicely browned or charred, about 5-7 minutes per side if whole, less if bite-sized pieces.
- Let the cooked chicken rest for a few minutes, then slice thinly if cooked whole.
5. Assemble the Bowls:
- Divide the cooked quinoa evenly among your serving bowls.
- Top the quinoa with the sliced cooked chicken.
- Arrange the sliced cucumbers and halved cherry tomatoes in the bowls.
- Drizzle generously with the homemade tzatziki sauce.
- Sprinkle the crumbled feta cheese over the top.
6. Garnish and Serve:
- Garnish with chopped fresh herbs (like parsley or dill), if desired.
- Serve the Greek Chicken Gyro Bowls immediately.