01 - In a mixing bowl, whisk together the olive oil, lemon juice, minced garlic, oregano, thyme, paprika, salt, and black pepper. Add the chicken breasts, tossing to coat evenly. Cover and refrigerate to marinate for at least 20 minutes, or up to 2 hours for enhanced flavor.
02 - Heat olive oil in a saucepan over medium heat. Add the rice and stir continuously for 1 minute to toast the grains. Pour in the water and salt, bringing the mixture to a boil. Cover the saucepan, reduce the heat to a simmer, and cook for 12-15 minutes until the liquid is absorbed. Remove from heat and let rest for 5 minutes before fluffing with a fork.
03 - Combine the Greek yogurt, grated cucumber, chopped dill, minced garlic, olive oil, and lemon juice in a small bowl. Season with salt and pepper to taste, mix thoroughly, and chill in the refrigerator until ready to serve.
04 - Preheat a grill pan or skillet over medium-high heat. Remove the chicken from the marinade and grill for 5-6 minutes per side, or until fully cooked through and the internal temperature reaches 165°F. Transfer to a cutting board and let rest for 5 minutes before slicing.
05 - Divide the prepared rice evenly among serving bowls. Arrange the sliced grilled chicken, diced cucumber, cherry tomatoes, red onion, Kalamata olives, and crumbled feta over the rice. Drizzle generously with the tzatziki sauce and garnish with fresh herbs and lemon wedges.