Cook the fettuccine pasta according to package instructions until al dente. Drain and set aside.
In a large skillet, heat olive oil over medium heat.
Add sliced chicken breast and season with salt, pepper, and Italian seasoning.
Sauté the chicken until browned and cooked through, about 5-7 minutes.
Add minced garlic to the skillet and cook for 1 minute until fragrant.
Add broccoli florets to the skillet and sauté for 3-4 minutes until tender-crisp.
Pour in the heavy cream and bring to a gentle simmer.
Stir in the grated Parmesan cheese until melted and creamy.
Add the cooked pasta to the skillet and toss until well combined.
Serve warm, garnished with additional Parmesan if desired.