Cook fettuccine according to package instructions until al dente. Drain and set aside.
Heat olive oil in a large skillet over medium heat. Add shrimp, season with salt and pepper, and cook until pink and opaque, about 2-3 minutes per side. Remove shrimp and set aside.
In the same skillet, melt butter and sauté minced garlic until fragrant, about 1 minute.
Add heavy cream and bring to a simmer. Slowly whisk in Parmesan cheese until the sauce thickens.
Return shrimp to the skillet and toss to coat in Alfredo sauce. Add cooked fettuccine and mix well.
Garnish with chopped fresh parsley and serve immediately.
Notes
For a lighter version, substitute half-and-half for heavy cream. Serve with a green side salad for a complete meal.