Turn the Instant Pot to Sauté mode. Add olive oil and chicken pieces, cooking for 2–3 minutes until lightly browned.
Stir in the minced garlic and cook for 30 seconds, stirring constantly.
Pour in ½ cup of chicken broth and deglaze the pot by scraping up any browned bits from the bottom with a spatula.
Add the remaining 3½ cups of chicken broth. Layer the uncooked penne pasta on top (do not stir). Sprinkle in the Italian seasoning, paprika, and black pepper.
Close the lid and set the Instant Pot to High Pressure for 4 minutes.
Once the cooking time ends, quick release the pressure by switching the valve to Venting.
Open the lid and stir the pasta mixture. Add the grated Parmesan cheese and stir until melted and well combined.
Pour in the heavy cream and stir to combine.
Add the sun-dried tomatoes and fresh spinach, stirring until the spinach is wilted.
Serve warm, garnished with fresh basil if desired.
Notes
You can substitute penne with rotini, fusilli, or ziti.
Use half-and-half instead of heavy cream for a lighter sauce.
Add red pepper flakes for a bit of heat.