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

Season the chicken breasts with salt and pepper. In a large skillet, melt 1 tablespoon of butter over medium heat. Cook the chicken until golden brown and cooked through, about 6-8 minutes per side. Remove from skillet and slice.

In the same skillet, melt remaining butter over medium heat. Add minced garlic and sauté for 1 minute until fragrant.

Pour in heavy cream and bring to a simmer. Stir in Parmesan cheese until melted and sauce is smooth.

Add cooked pasta and sliced chicken to the sauce. Toss to coat evenly and heat through for 3-4 minutes.

Serve immediately, garnished with additional Parmesan cheese if desired.