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 and coat thoroughly. 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 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 - Combine Greek yogurt, grated and squeezed cucumber, fresh dill, minced garlic, olive oil, and lemon juice in a bowl. Season with salt and pepper to taste. Mix thoroughly, cover, and refrigerate 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 and the juices run clear. Transfer to a cutting board and let rest for 5 minutes before slicing.
05 - Divide the fluffed rice among four bowls. Arrange sliced grilled chicken, diced cucumber, halved cherry tomatoes, red onion slices, Kalamata olives, and crumbled feta over the rice in each bowl. Spoon tzatziki generously on top and finish with fresh parsley or dill and lemon wedges.