Creating this Healthy Chicken Cauliflower Rice Casserole is straightforward. Just follow these steps:

1. Preheat the Oven: Start by preheating your oven to 375°F (190°C).
2. Sauté the Chicken: In a large skillet over medium heat, add 1 teaspoon of olive oil. Sauté the diced chicken until cooked through and lightly browned, about 5-7 minutes. Season with salt, pepper, and onion powder.
3. Add Vegetables: Add the onion and garlic, stirring until fragrant. Then, mix in the broccoli florets and bell peppers. Cook for an additional 3-5 minutes.
4. Incorporate Cauliflower Rice: Stir in the cauliflower rice along with the Italian herbs and garlic powder. Combine thoroughly.
5. Add Broth: Pour in the chicken broth, mixing everything together. Cook for about 3 more minutes until heated through.
6. Transfer to Casserole Dish: Carefully transfer the mixture to a greased 9×13-inch casserole dish, spreading evenly.
7. Top with Cheese: Sprinkle the shredded cheese over the top of the casserole.
8. Bake: Place the casserole in the oven and bake for 30-35 minutes or until the cheese is bubbly and golden.
9. Cool Slightly: Once baked, remove the casserole from the oven and allow it to cool for 5-10 minutes before serving.

These simple instructions make it easy to whip up this incredible dish, leaving you with a delightful meal ready in no time.