Cook the penne 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 and season with salt and pepper. Cook until browned and cooked through, about 6-8 minutes.
Add the minced garlic to the skillet and sauté for 1-2 minutes until fragrant.
Pour in the heavy cream and stir to combine. Bring to a simmer, then reduce the heat to low.
Stir in the grated Parmesan cheese and Italian seasoning. Continue to cook, stirring frequently, until the sauce is creamy and thickened, about 3-5 minutes.
Add the cooked penne pasta to the skillet and toss to coat the pasta in the sauce.
Serve immediately, garnished with chopped parsley.