Cook the rice according to package instructions. Let it rest for a few minutes, then fluff with a fork and keep warm.
Cut the chicken into small pieces. Add olive oil, garlic powder, oregano, salt, and pepper. Mix well to coat evenly.
Heat a pan over medium heat. Add the chicken and cook for 6–8 minutes, stirring occasionally, until fully cooked and lightly golden. Remove from heat and set aside.
Wash and chop cucumber into small chunks. Slice cherry tomatoes in half and cut red onion into thin slices. Keep vegetables fresh and ready.
In a small bowl, add yogurt, lemon juice, garlic powder, and salt. Mix until smooth and creamy. Let it sit for a few minutes for better flavor.
Take serving bowls and add a layer of cooked rice as the base. Spread evenly without pressing down.
Add cooked chicken over the rice. Then add cucumber, tomatoes, onion, olives, and feta cheese on top.
Drizzle the prepared sauce over the bowl. Add a little extra olive oil or lemon juice if desired.
Serve immediately while fresh and slightly warm.