Cook the fettuccine according to package instructions.
Heat olive oil in a large skillet over medium heat.
Season chicken with salt and pepper, then add to the skillet.
Cook chicken for 6-7 minutes on each side until fully cooked.
Remove chicken from the skillet and let rest before slicing.
In the same skillet, add minced garlic and sauté until fragrant.
Pour in the heavy cream, stirring to combine with the garlic.
Gradually whisk in Parmesan cheese until melted.
Add cooked fettuccine to the sauce and toss to coat.
Slice the chicken and serve over the pasta, garnished with parsley.