01 - Combine olive oil, lemon juice, garlic, oregano, cumin, salt, and pepper in a bowl. Add chicken and toss to coat thoroughly. Cover and refrigerate for at least 15 minutes, up to 2 hours for deeper flavor infusion.
02 - Rinse rice under cold water until water runs clear. Combine rice, water, and salt in a saucepan. Bring to a rolling boil, then reduce heat to low, cover tightly, and simmer for 15 minutes until rice is tender and liquid is absorbed. Fluff gently with a fork.
03 - Whisk together Greek yogurt, lemon juice, olive oil, minced garlic, dill, salt, and pepper in a small bowl until smooth and well combined. Refrigerate until serving.
04 - Heat grill pan or skillet over medium-high heat. Remove chicken from marinade, allowing excess to drip off. Cook for 5-6 minutes per side until golden brown and internal temperature reaches 165°F. Let rest for 5 minutes before slicing against the grain.
05 - Divide cooked rice evenly among 4 serving bowls. Arrange sliced chicken on top along with cherry tomatoes, cucumber, red onion, Kalamata olives, and crumbled feta. Drizzle generously with yogurt sauce and garnish with fresh parsley.
06 - Serve bowls immediately while chicken is still warm. Offer additional yogurt sauce on the side and consider serving with warm pita bread.