Preheat your oven to 425°F (220°C).
Toss broccoli florets with olive oil, salt, and pepper in a baking dish.
Spread the broccoli in a single layer and roast for 15-20 minutes.
While the broccoli is roasting, cook the fettuccine according to package instructions until al dente.
In a large skillet, melt butter over medium heat and add minced garlic.
Add shrimp to the skillet and cook for 2-3 minutes, until pink and opaque.
Stir in heavy cream and bring the mixture to a gentle simmer.
Add Parmesan cheese and Italian seasoning, stirring until smooth.
Toss the cooked fettuccine and roasted broccoli into the sauce, mixing to combine.
Season with salt and pepper to taste before serving warm.