Preheat the oven to 375°F (190°C).
Heat olive oil in a large skillet over medium heat.
Add garlic and sauté briefly until fragrant.
Stir in cauliflower rice and cook for 5 minutes.
Transfer cauliflower rice to a mixing bowl.
Add cooked chicken, Greek yogurt, half of the cheddar, spices, salt, and pepper.
Mix everything until well combined.
Spread the mixture evenly into a greased baking dish.
Top with remaining cheddar and mozzarella cheese.
Bake uncovered for 30 minutes until bubbly and golden.
Remove from oven and rest for 5 minutes.
Garnish with fresh parsley and serve warm.