Bring a large pot of salted water to a boil. Add the 12 oz cheese tortellini and cook according to package instructions until al dente, usually about 3-5 minutes. Drain and set aside.
In a frying pan over medium heat, cook the chopped turkey bacon until crisp, about 5-7 minutes. Remove from the pan and place on paper towels to drain excess fat. In the same pan, add minced garlic and sauté for about 30 seconds until fragrant.
Reduce heat to low and pour in 1 cup heavy cream. Stir in 1 cup grated Parmesan cheese, 1 tsp Italian seasoning, and season with salt and pepper to taste. Stir continuously until the cheese melts and the sauce thickens slightly, about 3-4 minutes.
In a large mixing bowl, combine the cooked tortellini, shredded chicken, turkey bacon, and Alfredo sauce. Toss gently to coat everything evenly.
Transfer the mixture into your greased baking dish. Sprinkle 1 cup shredded mozzarella cheese evenly over the top.
Preheat the oven to 350°F (175°C). Bake the casserole uncovered for 20-25 minutes or until the cheese is melted, bubbly, and lightly golden.
Remove from oven and let it rest for a few minutes. Garnish with freshly chopped parsley before serving.