In a small bowl, combine Italian seasoning, paprika, salt, and pepper.
Pat the chicken dry and rub the seasoning onto both sides.
Heat a large pan over medium heat, then add avocado oil.
Sear the seasoned chicken for 3–5 minutes per side until it reaches 165°F internally, then remove and set aside to rest.
Reduce the heat to medium-low, add a bit more avocado oil and butter, then stir in chopped onion with a pinch of salt.
Sauté for about 3 minutes until translucent, add garlic, and cook for one more minute.
Deglaze the pan with chicken broth, scraping up any browned bits.
Once the broth comes to a light boil, stir in the dry pasta and ensure it's fully submerged an cook for 10 minutes.
Turn off the heat and add Parmesan, heavy cream, and parsley.
Stir until the cheese melts and the sauce thickens slightly, then taste and adjust seasoning.
Slice the rested chicken into strips, return it to the pan, toss everything to combine, and serve warm.