Set your Instant Pot to the Sauté mode. Pour in the olive oil and add the diced onion. Sauté for about 2-3 minutes until the onion becomes translucent and soft. Toss in the minced garlic and sauté for an additional minute, allowing it to become fragrant.
Add the diced chicken breast into the pot along with the Cajun seasoning and smoked paprika. Stir everything together well and cook for about 5-7 minutes, or until the chicken pieces are evenly browned on all sides.
Introduce the diced red and green bell peppers to the mixture. Then pour in the chicken broth, ensuring everything is well combined and mixed thoroughly.
Carefully add the penne pasta to the Instant Pot, ensuring that it is fully submerged in the broth. Secure the lid on the pot, making sure the valve is set to sealing. Select the Manual or Pressure Cook function and set the timer for 5 minutes.
Once the cooking time has elapsed, perform a quick release of pressure by gently moving the valve to venting. Stand back to avoid the steam release.
Once the pressure has fully released, open the lid. Stir in the heavy cream and shredded cheddar cheese until fully incorporated and creamy. Taste the pasta and adjust seasoning with salt and freshly ground black pepper as necessary.
Dish up the creamy Cajun pasta into individual bowls and crown each serving with a generous sprinkle of chopped fresh parsley for a colorful touch.
Notes
For an added pop, consider garnishing with a slice of lemon on the side for a zesty contrast alongside the creamy pasta.
Keyword Cajun, chicken, creamy, instant pot, pasta