Follow these simple steps to create your Greek Chicken Bowls with Creamy Tahini Feta Sauce:

1. Marinate the Chicken: In a bowl, combine olive oil, lemon juice, minced garlic, oregano, salt, and pepper. Add the chicken breasts and coat well. Let it marinate for at least 15 minutes.
2. Cook the Quinoa/Rice: While the chicken marinates, cook quinoa or brown rice according to package instructions. Set aside.
3. Prepare the Tahini Feta Sauce: In a small bowl, whisk together tahini, crumbled feta, lemon juice, and water until smooth. Adjust seasoning with salt and pepper.
4. Cook the Chicken: Preheat a grill or skillet over medium heat. Cook the marinated chicken for about 6-7 minutes on each side, or until fully cooked and internal temperature reaches 165°F (75°C). Remove from heat and let it rest for a couple of minutes before slicing.
5. Assemble the Bowls: In each bowl, add a serving of quinoa or brown rice as a base. Top with sliced chicken, cherry tomatoes, cucumbers, olives, red onion, and greens.
6. Drizzle Sauce: Generously drizzle the creamy tahini feta sauce over each bowl.
7. Serve and Enjoy: Serve immediately with extra sauce on the side if desired.