01 - In a mixing bowl, combine olive oil, lemon juice, minced garlic, oregano, thyme, paprika, salt, and black pepper. Add the chicken breasts and turn to coat evenly. Cover and refrigerate for at least 20 minutes, or up to 2 hours for deeper flavor.
02 - Heat olive oil in a saucepan over medium heat. Add the rice and stir for 1 minute to toast the grains. Pour in the water and salt, bring to a boil, then cover, reduce heat to low, and simmer for 12 to 15 minutes. Remove from heat and let rest, covered, for 5 minutes. Fluff with a fork before serving.
03 - Grate half a cucumber and squeeze out excess moisture with a clean towel. In a bowl, combine Greek yogurt, the grated cucumber, chopped dill, minced garlic, olive oil, lemon juice, salt, and pepper. Stir until smooth and chill until ready to serve.
04 - Heat a grill pan or skillet over medium-high heat. Remove the chicken from the marinade and grill for 5 to 6 minutes per side, until the internal temperature reaches 165°F. Transfer to a cutting board and rest for 5 minutes before slicing against the grain.
05 - Divide the fluffy rice among four bowls. Arrange sliced grilled chicken, diced cucumber, halved cherry tomatoes, red onion, Kalamata olives, and crumbled feta over the rice in sections. Spoon tzatziki sauce generously on top and finish with fresh herbs and lemon wedges.