Preheat the Oven:

• Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with a little olive oil or cooking spray.

Prepare the Chicken and Pasta:

• If you haven’t already, cook and shred your chicken. You can use rotisserie chicken or cook your own chicken breasts.
• Cook the pasta according to the package instructions, drain, and set aside.

Cook the Garlic:

• In a large skillet, heat the tablespoon of olive oil over medium heat. Add the minced garlic and sauté for 1-2 minutes until fragrant. Be careful not to burn the garlic.

Combine the Casserole Mixture:

• In a large mixing bowl, combine the cooked chicken, cooked pasta, Alfredo sauce, garlic, frozen peas (if using), and half of the mozzarella cheese. Season with salt and pepper to taste. Stir until everything is well coated.

Assemble the Casserole:

• Transfer the chicken and pasta mixture to the prepared baking dish. Top with the remaining mozzarella cheese and Parmesan cheese.

Bake the Casserole:

• Cover the baking dish with aluminum foil and bake for 20 minutes. Then, remove the foil and bake for an additional 5-10 minutes, or until the cheese is melted and bubbly and the casserole is heated through.

Garnish and Serve:

• Remove from the oven and let it sit for a few minutes before serving. Garnish with freshly chopped parsley and serve hot.