Keto Chicken and Mushroom Casserole

Ingredients

• 3 tbsp olive oil, divided
• 550 g boneless chicken thighs
• 2 tsp garlic powder, divided
• 1 tsp onion powder
• ½ tsp salt
• ¼ tsp pepper
• 140 g mushrooms, sliced
• 55 g (425 ml) fresh spinach
• 280 g fresh, cauliflower rice
• 475 ml (220 g) shredded mozzarella cheese
• 1 tbsp olive oil, for greasing
• salt and pepper to taste
• 14 g pea sprouts, for garnishing (optional)