Cut the chicken breast into bite-sized pieces and season with salt, black pepper, and Italian seasoning.
Heat the olive oil in a large pan over medium heat. Cook the chicken for 6 to 8 minutes until golden brown and cooked through. Remove from the pan and set aside.
Bring a large pot of salted water to a boil. Cook the pasta al dente according to the package directions. Reserve 1/2 cup of pasta water, then drain.
In the same pan, melt the butter and saute the garlic for about 30 seconds until fragrant.
Pour in the cream and let it simmer gently for a few minutes. Stir in the Parmesan until the sauce is smooth and slightly thick.
Return the chicken to the pan and add the drained pasta. Toss so everything is coated in the creamy sauce, loosening with reserved pasta water if needed. Taste and adjust the seasoning.
Serve hot, topped with extra Parmesan, black pepper, and fresh parsley.