Cook the fettuccine according to the package directions until al dente. Drain and set aside.
Heat the olive oil in a large skillet over medium-high heat.
Season the chicken with garlic powder, Italian seasoning, paprika, salt, and black pepper.
Add the chicken to the skillet and cook for 6 to 8 minutes until golden brown and fully cooked. Transfer to a plate.
Reduce the heat to medium and melt the butter in the same skillet.
Add the minced garlic and cook for 30 seconds until fragrant.
Pour in the heavy cream and stir in the onion powder. Simmer for 2 to 3 minutes.
Gradually whisk in the Parmesan cheese until the sauce is smooth and creamy.
Return the cooked chicken to the skillet and stir until coated in the sauce.
Add the cooked fettuccine and toss until evenly coated.
Garnish with chopped parsley and extra Parmesan cheese before serving.