2Cook the pasta according to the package instructions until al dente. Drain and set aside.
In a large skillet, cook the chicken breast over medium heat until fully cooked and golden brown. Remove from the skillet and slice into strips.
In the same skillet, add the tomato sauce and milk. Stir well and bring to a simmer.
Add the cooked pasta and sliced chicken to the skillet. Stir to combine.
Tear the mozzarella cheese into small pieces and add to the skillet. Stir until the cheese is melted and well incorporated.
Season with salt and pepper to taste. Stir well to ensure even seasoning.
Serve the pasta hot, garnished with additional mozzarella if desired.