01 - Whisk together olive oil, minced garlic, oregano, smoked paprika, cumin, lemon juice, salt, and pepper in a bowl. Coat chicken breasts thoroughly and let marinate for at least 15 minutes at room temperature.
02 - Combine rinsed quinoa, chicken broth, and salt in a saucepan. Bring to a boil over high heat, then reduce to low, cover tightly, and simmer for 15 minutes until liquid is absorbed. Remove from heat and fluff with a fork.
03 - Preheat grill pan or skillet over medium-high heat. Remove chicken from marinade and grill for 6 to 7 minutes per side until internal temperature reaches 165°F. Transfer to a cutting board and let rest for 5 minutes before slicing into thin strips.
04 - Whisk together extra-virgin olive oil, lemon juice, honey, Dijon mustard, salt, and pepper in a small bowl until emulsified and smooth.
05 - Divide cooked quinoa among four serving bowls. Arrange sliced chicken, cherry tomatoes, cucumber, red onion, Kalamata olives, and crumbled feta on top. Drizzle with dressing and garnish with fresh parsley.