Cook the fettuccine pasta according to package instructions until al dente. Drain and set aside.
In a large skillet, heat the olive oil over medium heat. Add the chicken pieces, season with garlic powder, salt, and pepper, and cook until the chicken is golden brown and cooked through, about 5-7 minutes. Remove the chicken from the skillet and set aside.
In the same skillet, pour in the heavy cream and bring to a gentle simmer. Stir in the Parmesan cheese and Italian seasoning, mixing until the cheese is melted and the sauce is creamy.
Add the cooked fettuccine and chicken back into the skillet, tossing to coat everything in the Alfredo sauce. Cook for an additional 2-3 minutes until heated through.
Serve immediately, garnished with chopped fresh parsley.