Creating Greek Chicken Bowls is simple when you follow these easy steps:

1. Marinate the Chicken: In a bowl, combine olive oil, garlic, oregano, lemon juice, salt, and pepper. Add chicken breasts, ensuring they are evenly coated. Cover and refrigerate for at least 30 minutes.

2. Cook the Quinoa or Rice: Prepare quinoa or rice according to package instructions. Set aside when done.

3. Cook the Chicken: Heat a skillet over medium-high heat. Add the marinated chicken and cook for about 5-7 minutes on each side, or until fully cooked and no longer pink in the center. Remove from heat and let rest for a few minutes.

4. Slice the Chicken: Once rested, slice the chicken into strips for easy assembly.

5. Prepare the Vegetables: While the chicken is resting, chop the cherry tomatoes, cucumber, red onion, and bell pepper.

6. Assemble the Bowls: In bowls, add a base of quinoa or rice. Top with sliced chicken, cherry tomatoes, cucumber, red onion, and bell pepper.

7. Add Feta Cheese: Sprinkle crumbled feta cheese over the top for a savory finish.

8. Garnish: Finish with fresh parsley and a drizzle of tzatziki sauce if desired.