Season chicken breasts with salt and pepper and add to hot Ninja Foodi.
Brown chicken breasts on each side- this should take about 2 minutes per side. Once chicken breasts are browned, remove from Ninja Foodi and set aside for later.
Add butter and garlic to Ninja Foodi and stir. Be sure to scrape the bottom of the pot to loosen up all of the browned chicken bits.- Use a plastic spatula so that you don't scratch the pot.
Once butter is melted, add in the cream- stir constantly and heat until simmering.
Pour in chicken broth and salt-stir.
Break pasta in half over Ninja Foodi and add to sauce mixture. Stir just enough until the all pasta is covered in sauce. Do not over stir.
Place browned chicken breasts on top of pasta and sauce.
Place pressure cooker lid on Ninja Foodi and cook on high pressure for 10 minutes. Make sure the valve is in "seal" position.
When the timer beeps, let the pressure naturally release for 6-8 minutes. Slowly move the valve to "release." If the steam is clear, continue to quick release the remaining pressure. If the steam is creamy, move the valve back to "seal" and continue to naturally release pressure. Once all pressure has been released, remove lid.
Remove chicken breasts from Ninja Foodi add in cheese and raw broccoli. Stir until well combined.
While the broccoli is "steaming" in the hot pasta and cheese sauce, slice or shred chicken and then return to Ninja Foodi.