Heat olive oil in a large skillet over medium-high heat.
Add the ground meat to the skillet and cook until browned, breaking it into small crumbles with a spatula.
Stir in the oregano, garlic powder, onion powder, cumin, salt, and pepper, then cook for an additional 2 minutes until fragrant.
Remove the skillet from heat and drain any excess fat.
Prepare four serving bowls and divide the cooked rice equally among them.
Top the rice with the seasoned meat mixture.
Arrange the tomatoes, cucumbers, red onion, and olives in sections over the meat and rice.
Finish each bowl with crumbled feta cheese and a generous dollop of tzatziki sauce.