Season chicken breasts with salt and pepper.
Heat olive oil until hot, then sear chicken breast in Instant Pot for several minutes on both sides until evenly browned.
Add sausage and garlic to pot and cook for about one minute.
Add uncooked pasta and cajun seasoning.
Cook on Manual, High Pressure for 6 minutes. Instant Pot with take 10-15 minutes to come to pressure and then count down from 6 minutes.
Stir pasta mixture together and add warm cream. Slowly add in freshly grated parmesan cheese and stir until melted.
Serve with additional shredded parmesan and chopped flat leaf parsley.