In a small bowl, combine the extra virgin olive oil, fresh lemon juice, oregano, garlic powder, salt, and black pepper. Mix well. Place the chicken breasts in a resealable plastic bag or a shallow glass dish, then pour the marinade over the chicken, ensuring each piece is thoroughly coated. Seal or cover and refrigerate for at least 30 minutes.
In a medium saucepan, combine the rinsed quinoa with vegetable broth (or water). Bring to a gentle boil, then reduce heat to low, cover, and simmer for about 15 minutes. Remove from heat and let it rest, covered, for an additional 5 minutes. Fluff the quinoa with a fork.
Preheat your grill or grill pan to medium-high heat. Remove the chicken from the marinade, discarding the marinade. Grill the chicken for approximately 6-7 minutes on each side, or until the internal temperature reaches 165°F (75°C). Allow it to rest for 5 minutes before slicing into bite-sized pieces.
In each meal-prep container, scoop a generous portion of the fluffy quinoa as the base. Layer sliced grilled chicken on top, followed by an even distribution of cherry tomatoes, cucumber, bell pepper, red onion, and halved kalamata olives. Sprinkle crumbled feta cheese over each bowl.
Sprinkle chopped fresh parsley over the completed bowls. Seal the meal prep containers with lids and refrigerate for up to 5 days.
Notes
For an inviting touch, place a lemon wedge in each meal prep bowl.