1. 1. Preheat the oven to 375°F (190°C).

2. 2. Cook the pasta according to package instructions until al dente. Drain and set aside.

3. 3. In a saucepan, heat the low-fat milk over medium heat until warm.

4. 4. Add the cream cheese and mozzarella cheese to the saucepan, stirring until melted and smooth.

5. 5. Stir in the light sour cream until well combined.

6. 6. Season with salt and pepper to taste.

7. 7. Add the cooked chicken breast to the saucepan, stirring to coat the chicken in the creamy sauce.

8. 8. In a baking dish, combine the cooked pasta and creamy chicken mixture, ensuring everything is evenly coated.

9. 9. Top with additional mozzarella cheese, if desired.

10. 10. Bake in the preheated oven for 20-25 minutes or until the cheese is bubbly and golden brown.

11. 11. Serve hot and enjoy!