01 - In a bowl, mix olive oil, lemon juice, garlic, oregano, thyme, paprika, salt, and pepper. Add chicken, coat well, cover, and marinate for at least 20 minutes (up to 2 hours).
02 - In a saucepan, heat olive oil over medium heat. Add rice, stir for 1 minute. Pour in water and salt, bring to a boil, cover, reduce heat, and simmer for 12-15 minutes. Remove from heat and let rest for 5 minutes. Fluff with a fork.
03 - Combine yogurt, grated cucumber, dill, garlic, olive oil, lemon juice, salt, and pepper. Mix well and chill until ready to use.
04 - Heat a grill pan or skillet over medium-high heat. Grill marinated chicken for 5-6 minutes per side, until cooked through. Rest for 5 minutes, then slice.
05 - Arrange rice in bowls. Top with grilled chicken, cucumber, tomatoes, red onion, olives, and feta. Spoon over tzatziki and garnish with fresh herbs and lemon wedges.