01 - Combine olive oil, minced garlic, dried oregano, smoked paprika, ground cumin, lemon juice, salt, and pepper in a shallow dish. Coat chicken breasts thoroughly with the marinade, ensuring even coverage. Allow chicken to marinate for at least 15 minutes at room temperature for optimal flavor absorption.
02 - Place rinsed quinoa, chicken broth, and salt in a medium saucepan. Bring to a rolling boil over high heat. Immediately reduce heat to low, cover tightly with a lid, and simmer gently for 15 minutes until all liquid has been absorbed. Remove from heat and let stand covered for 5 minutes. Fluff quinoa with a fork before serving.
03 - Preheat grill pan or cast iron skillet over medium-high heat until hot but not smoking. Place marinated chicken breasts on the hot surface and cook for 6 to 7 minutes per side, developing a golden-brown exterior. Internal temperature should reach 165°F. Transfer chicken to a cutting board and let rest for 5 minutes before slicing thinly against the grain.
04 - In a small mixing bowl, combine extra-virgin olive oil, fresh lemon juice, honey, and Dijon mustard. Whisk vigorously until the mixture emulsifies and thickens slightly. Season with salt and pepper to taste, adjusting acidity or sweetness as desired.
05 - Divide cooked quinoa evenly among four serving bowls, creating a bed at the bottom. Arrange sliced grilled chicken, cherry tomatoes, diced cucumber, red onion slices, Kalamata olives, and crumbled feta cheese in sections over the quinoa. Drizzle dressing generously over each bowl and finish with a sprinkling of fresh parsley.
06 - Serve bowls immediately while chicken is warm, or allow to reach room temperature for a refreshing cold meal. The flavors continue to develop as the dish sits, making it excellent for meal prep and leftovers.