Follow these simple steps to create your delicious Greek Chicken Bowls:

1. Marinate Chicken: In a bowl, combine olive oil, lemon juice, oregano, garlic powder, paprika, salt, and pepper. Add the chicken breasts, ensuring they are well-coated. Let marinate for at least 15 minutes.

2. Cook Quinoa/Rice: While the chicken marinates, cook quinoa or brown rice according to package instructions. Set aside when done.

3. Cook Chicken: Heat a skillet over medium heat. Add the marinated chicken breasts and cook for about 6-7 minutes on each side or until cooked through. The internal temperature should reach 165°F (75°C). Remove from heat and let rest for a few minutes.

4. Slice Chicken: Once the chicken has rested, slice it into strips.

5. Prepare Vegetables: In a bowl, combine cherry tomatoes, cucumber, and red onion. Toss lightly with a drizzle of olive oil, salt, and pepper.

6. Assemble Bowls: In serving bowls, layer the cooked quinoa or rice as the base. Top with sliced chicken, the vegetable mixture, and sprinkle with feta cheese.

7. Add Tzatziki Sauce: Drizzle tzatziki sauce generously over the top.

8. Garnish: Finish with fresh parsley for added flavor and presentation.