Turn on your Instant Pot and select the 'Saute' function on high.
Add spicy Italian sausage and saute until mostly browned.
Add pasta sauce, Italian seasoning, garlic pepper and salt (to taste). Stir until all ingredients are well combined. Continue to saute for an additional 1-2 minutes stiring regularly.
Select the 'Cancel' function to reset the pressure cooking function. With a wooden spoon or laddle, remove the majority of the pasta sauce with sausage and set aside. NOTE: If you prefer, you can keep the sauce and sausage in the Pot and cook with the pasta. However, I personally like to remove so the pasta really settles into the chicken broth.
Add pasta and chicken stock or water. Gently degalze the bottom of the pot to ensure there is nothing stuck. Doing so will help avoid getting the 'Burn Notice'.
Select the 'Pressure Cook' function on high and cook for 4 minutes.
Once the timer beeps, naturally release pressure for 1 minute then quick release the pressure. Remove the lid.
Stir the pasta and add in pasta sauce with sausage. Continue to sitrring the pasta until all ingredienrs are well combined.
Taste and add any additional salt and pepper, as needed.
Garnish with freshly grated Parmesan cheese.
Serve hot and enjoy!