Cook fettuccine pasta in salted boiling water until al dente
Drain the pasta and set aside
Season shrimp with salt, black pepper, and garlic powder
Heat butter and olive oil in a large skillet over medium heat
Add shrimp and cook until pink and opaque, then remove from the skillet
Add minced garlic to the skillet and cook until fragrant
Pour in heavy cream and bring to a gentle simmer
Stir in grated Parmesan cheese until the sauce is smooth
Add salt, black pepper, and a pinch of nutmeg if desired
Return the shrimp to the skillet
Add the cooked pasta and toss to coat in the sauce
Cook for 1 to 2 minutes until everything is heated through
Serve immediately
Garnish with chopped parsley if desired