Bring a large pot of salted water to a boil. Add 8 oz of fettuccine pasta and cook according to package instructions until al dente, usually about 10-12 minutes. Reserve about ½ cup of pasta water before draining the pasta in a colander. Set the pasta aside.
Heat 3 tablespoons of olive oil in a large skillet over medium-high heat. Once hot, add the peeled and deveined shrimp in a single layer. Cook for 2-3 minutes on each side until they turn pink and opaque. Remove the shrimp from the skillet and set aside.
In the same skillet, reduce heat to medium and add the minced garlic. Sauté for about 1 minute until fragrant, making sure the garlic doesn’t burn.
Pour in 1 cup of heavy cream and bring it to a gentle simmer. Stir in 1 teaspoon Italian seasoning and season with salt and pepper. Let the cream reduce slightly, thickening for about 3-4 minutes.
Lower the heat and gradually stir in 1 cup of grated Parmesan cheese until melted and smooth. The sauce will become luxuriously creamy and cheesy.
Return the cooked shrimp to the skillet, stirring to coat them in the sauce. Then add the drained fettuccine pasta. Toss everything together gently, adding reserved pasta water a tablespoon at a time if the sauce needs loosening.
Sprinkle chopped fresh parsley over the top for a vibrant finish. Serve immediately while warm and creamy.