Make the Creamy Sauce: Pour in the chicken broth and bring it to a gentle simmer. Stir in the heavy cream and Italian seasoning, and allow the sauce to simmer for about 3-5 minutes until slightly thickened.
Combine the Ingredients: Return the cooked chicken back to the skillet. Add the previously cooked spaghetti and toss everything together to coat the pasta in the creamy sauce.
Top with Cheese: Sprinkle the Monterey Jack cheese over the top and stir until melted and combined.
Serve and Enjoy: Garnish with freshly chopped parsley and serve hot, straight from the skillet.
Notes
Leftovers can be stored in an airtight container in the fridge for up to 3 days. Reheat with a splash of chicken broth or cream to restore the texture.