Prepare the Greek Chicken Bowls by following these simple steps:

1. Marinate the Chicken: In a bowl, mix olive oil, lemon juice, garlic, oregano, thyme, salt, and pepper. Add the chicken breasts and coat evenly. Let marinate for at least 30 minutes (or up to 24 hours in the refrigerator).

2. Cook the Rice/Quinoa: Prepare brown rice or quinoa according to package instructions. Fluff and set aside.

3. Cook the Chicken: Heat a skillet over medium-high heat. Remove the chicken from the marinade and cook for 5-7 minutes on each side or until golden brown and cooked through. Use a meat thermometer to ensure the internal temperature reaches 165°F (75°C).

4. Rest and Slice: Once cooked, transfer the chicken to a cutting board and let it rest for 5 minutes. Slice into strips.

5. Prep the Vegetables: While the chicken is cooking, prepare the cherry tomatoes, cucumber, red onion, and olives.

6. Assemble the Bowls: In serving bowls, layer the cooked rice or quinoa, followed by sliced chicken, cherry tomatoes, cucumber, onions, olives, and feta cheese.

7. Drizzle Sauce: Add a generous drizzle of tzatziki sauce over the top of the assembled bowls.

8. Garnish: Sprinkle fresh parsley on top for added freshness and color.