Preheat your oven to 375°F (190°C) and prepare a 9x13 inch baking dish by greasing it lightly with cooking spray or olive oil.
In a large mixing bowl, combine the shredded chicken, heavy cream, Parmesan cheese, broccoli florets, cauliflower rice, garlic powder, onion powder, Italian seasoning, and salt and pepper. Mix until all ingredients are well combined.
Pour the chicken and cream mixture into the prepared baking dish, spreading it evenly.
Sprinkle the shredded mozzarella cheese over the top of the casserole.
Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes.
Remove the foil and bake for an additional 10-15 minutes, or until the cheese is bubbly and golden brown.
Once done, take it out of the oven and let it cool for a few minutes before serving.
Garnish with chopped parsley for a fresh touch before serving.