01 - In a mixing bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, dried thyme, paprika, salt, and black pepper. Add the chicken breasts, turning to coat evenly. Cover and refrigerate for at least 20 minutes, or up to 2 hours for deeper flavor penetration.
02 - Heat olive oil in a saucepan over medium heat. Add the rice and stir for 1 minute to toast the grains. Pour in water and salt, bring to a boil, then cover, reduce heat to low, and simmer for 12 to 15 minutes until liquid is absorbed. Remove from heat and let rest, covered, for 5 minutes. Fluff with a fork before serving.
03 - Combine Greek yogurt, grated and squeezed cucumber, chopped dill, minced garlic, olive oil, and lemon juice in a bowl. Season with salt and pepper to taste. Stir thoroughly until smooth and well blended. Refrigerate until ready to serve to allow flavors to meld.
04 - Heat a grill pan or skillet over medium-high heat. Remove chicken from the marinade and grill for 5 to 6 minutes per side, until the internal temperature reaches 165°F and the exterior is golden with char marks. Transfer to a cutting board and rest for 5 minutes before slicing against the grain.
05 - Divide the fluffed rice among four bowls. Arrange sliced grilled chicken over the rice. Top with diced cucumber, halved cherry tomatoes, sliced red onion, Kalamata olives, and crumbled feta cheese. Spoon tzatziki sauce generously over each bowl and garnish with fresh parsley or dill and lemon wedges.