Bring a large pot of water to a boil and add a generous sprinkling of salt.
Pat dry the chicken breasts with a paper towel, trim off any excess fat, and season generously on both sides with salt, pepper, garlic powder, and Italian seasoning.
Heat oil in a large skillet over medium-high heat. Once it's hot, add the chicken and cook for 5-6 minutes on each side or until the chicken reaches an internal temperature of 165 degrees F.
While the chicken cooks, cook the pasta until it's al dente and reserve about 1/2 cup of pasta water before draining the pasta.
Once the chicken is fully cooked through, remove it from the skillet and set it aside. Let it rest for a few minutes before slicing it.
Add the butter, garlic, and red pepper flakes to the skillet and cook for a few seconds.
Stir in the heavy cream and scrape the bottom of the skillet. Add the parmesan cheese and cook the sauce for 3-5 minutes or until it thickens. Season with salt and pepper.
Stir in the cooked pasta, top it off with the sliced chicken, check for seasoning, and enjoy!