Preheat Oven: Preheat your oven to 375 degrees and lightly grease a casserole dish.
Mix Ingredients: In a large mixing bowl or straight into the casserole dish combine the diced chicken, cooked rice, frozen broccoli, cream of chicken soup, whipped cream cheese, and seasonings (salt, pepper, onion powder, garlic powder, Italian seasoning, smoked paprika). Mix well to ensure everything is coated evenly. Add milk to mix everything together easily
Add Cheese: Stir in the shredded sharp cheddar cheese until fully incorporated.
Assemble Casserole: Transfer the mixture into the prepared casserole dish. Spread it out evenly.
Top with Cheese & Crispy Onions: Sprinkle the Colby Jack cheese on top as well as the crispy onions
Bake: Bake uncovered in the preheated oven for 25-30 minutes, or until the cheese on top is melted and bubbly.
Serve: Let the casserole cool slightly before serving. Enjoy!