In a large mixing bowl, combine the shredded chicken, chopped cauliflower, broccoli, Alfredo sauce, garlic powder, Italian seasoning, salt, and pepper. Stir until well mixed.
Transfer the mixture to a greased 9x9-inch baking dish, spreading it evenly.
Sprinkle the shredded mozzarella and grated Parmesan cheese over the top of the chicken and vegetable mixture.
Bake in the preheated oven for 20-25 minutes, or until the cheese is bubbly and golden brown.
Once baked, remove from the oven and let it cool for a few minutes.
Garnish with fresh chopped parsley before serving.