Creating Keto Chicken Alfredo Broccoli Bake is straightforward if you follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prep Broccoli: Steam or blanch the broccoli florets until just tender, about 3-4 minutes. Drain and set aside.
3. Cook Chicken: If not using pre-cooked chicken, cook the chicken breasts in a skillet over medium heat with olive oil until fully cooked. Shred the chicken and set aside.
4. Make Alfredo Sauce: In a medium saucepan, combine heavy cream and half of the grated Parmesan cheese over medium heat. Stir until the cheese melts and the sauce thickens slightly. Season with garlic powder, onion powder, salt, pepper, and Italian seasoning.
5. Combine Ingredients: In a large mixing bowl, combine the shredded chicken, steamed broccoli, and Alfredo sauce. Mix well until everything is coated.
6. Assemble Bake: Transfer the mixture into a greased baking dish. Spread it evenly.
7. Add Cheese Topping: Sprinkle the remaining Parmesan cheese and shredded mozzarella cheese over the top.
8. Bake: Place the baking dish in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden brown.
9. Garnish: Once baked, remove from the oven and let it sit for a few minutes. Garnish with fresh parsley if desired.
10. Serve: Enjoy your delicious Keto Chicken Alfredo Broccoli Bake warm!