Cook the fettuccine according to package directions and drain.
In a large skillet, heat olive oil over medium-high heat.
Add the chicken to the skillet and season with salt and pepper.
Cook the chicken for 5-7 minutes on each side until fully cooked, then remove and let it rest.
In the same skillet, add minced garlic and sauté until fragrant.
Pour in the heavy cream and bring to a gentle simmer.
Stir in the grated Parmesan cheese until melted and smooth.
Slice the rested chicken and add it to the sauce with the cooked fettuccine.
Toss the pasta, chicken, and sauce together until everything is well coated.
Serve immediately, garnished with chopped parsley, and enjoy!