Creating Greek Chicken Gyro Bowls with Tzatziki Sauce is straightforward if you follow these easy-to-follow steps:

1. Prepare the Chicken Marinade: In a bowl, whisk together olive oil, lemon juice, minced garlic, oregano, salt, and pepper.
2. Marinate Chicken: Place the chicken breasts in a ziplock bag. Pour the marinade over the chicken, ensuring it’s well coated. Seal the bag and let it marinate in the refrigerator for at least 30 minutes.
3. Make the Tzatziki Sauce: In another bowl, combine Greek yogurt, grated cucumber, minced garlic, olive oil, lemon juice, and chopped dill. Season with salt and pepper to taste. Mix well and refrigerate until ready to serve.
4. Cook the Chicken: Preheat a grill pan or skillet over medium-high heat. Remove the chicken from the marinade, discarding excess marinade. Grill the chicken for about 6-8 minutes per side, or until cooked through and no longer pink in the center. Let rest for a few minutes before slicing.
5. Prepare the Rice or Quinoa: While the chicken is cooking, prepare the rice or quinoa according to package instructions.
6. Assemble the Bowls: In bowls, start with a base of rice or quinoa. Top with sliced grilled chicken, cherry tomatoes, shredded lettuce, red onion, olives, and feta cheese.
7. Drizzle with Tzatziki: Generously drizzle the tzatziki sauce over the assembled ingredients.
8. Garnish: Finish with a sprinkle of fresh parsley or dill for added flavor and presentation.

Following these simple steps will guide you in creating this incredible dish effortlessly.