In your instant pot, add in olive oil. Once hot, add in the onion, bell pepper, garlic, tomatoes, and mushrooms. Cook for 5 minutes or until onions are transparent and mushrooms are softened.
Add in the Spanish chorizo and cook for 3 more minutes.
Stir in the lemon juice, creole seasoning, bay leaf, and chicken stock. Season with salt and pepper.
Pour the pasta on top of the chicken stock. Do not stir at this point!
Cover and seal the pressure cooker and manually set for 6 minutes.
Once the timer goes off, let it sit for 5 more minutes, then release the pressure. Stir in the butter until well combined.
Serves with lemon wedges and cheese to garnish.