Add the chicken, garlic, Dijon mustard, Italian seasoning, sun-dried tomatoes, tomato paste, salt, black pepper powder, and dry penne to the pot.
Pour the chicken stock and stir. Make sure that the pasta and chicken are covered with the stock.
Cover the lid and select the PRESSURE COOK button on HIGH PRESSURE for 5 minutes. (Make sure the valve is in SEALING position).
Once the pressure-cooking cycle is over, quick release pressure by manually moving the valve from SEALING to VENTING position.
Select the CANCEL button and take the lid off carefully.
Add spinach, heavy cream, and parmesan cheese stir and cover the lid and let it sit for a couple of minutes until the cheese is melted and the spinach is wilted.
Once done give a final stir and add chopped basil.
Serve hot with bread and enjoy.