Stovetop Method:
Cook the Chicken: Heat olive oil in a large pot over medium heat. Season chicken breasts with salt, pepper, and Italian seasoning. Cook 5-7 minutes per side until golden and 165°F internally. Remove, shred, and set aside.
Sauté Aromatics: In the same pot, cook diced onion for 3-4 minutes until soft. Add garlic and red pepper flakes (if using), stirring for 1 minute.
Build the Base: Pour in marinara sauce and chicken broth, stirring well. Bring to a gentle simmer.
Add Cream and Cheese: Stir in heavy cream and grated parmesan until melted and smooth. Return shredded chicken to the pot.
Incorporate Pasta: Add cooked pasta and simmer for 5 minutes to blend flavors.
Season and Serve: Taste and adjust with salt and pepper. Ladle into bowls, top with mozzarella, extra parmesan, and garnish with basil or parsley.
Crockpot Method:
Combine Ingredients: Add raw chicken breasts, onion, garlic, Italian seasoning, red pepper flakes, marinara sauce, and chicken broth to the crockpot.
Slow Cook: Cook on low for 6-7 hours or high for 3-4 hours.
Shred Chicken: Remove chicken, shred it, and return to the pot.
Finish with Cream and Pasta: Stir in heavy cream, parmesan, and cooked pasta. Cook on low for 20-30 minutes more.
Serve: Spoon into bowls, top with mozzarella, parmesan, and herbs.