Step 1: Preheat your oven to 400°F (200°C).
Step 2: Place the chicken breast between two sheets of parchment paper or plastic wrap and pound it to an even thickness, about 1 inch.
Step 3: In one bowl, pour the milk. In another bowl, combine the panko breadcrumbs, salt, and pepper. Mix well.
Step 4: Dip the flattened chicken breast into the milk, then coat it with the breadcrumb mixture.
Step 5: Place the coated chicken breast in your baking dish and bake for about 20 minutes.
Step 6: While the chicken is baking, prepare the fettuccine noodles according to package instructions.
Step 7: Once the chicken is done, pour the red sauce over it, sprinkle with mozzarella and Parmesan, and bake for an additional 5-7 minutes.
Step 8: Serve the cheesy chicken over fettuccine noodles and enjoy!