Set your Instant Pot to the Sauté mode. Once hot, add the olive oil.
Season the chicken breasts with salt and pepper, then place them in the pot. Sear the chicken for about 3-4 minutes on each side until golden brown. Remove the chicken from the pot and set aside.
In the same pot, add the minced garlic and sauté for about 30 seconds until fragrant.
Pour in the chicken broth, scraping up any browned bits from the bottom of the pot.
Return the chicken breasts to the pot. Lock the lid in place and set the Instant Pot to cook on Manual high pressure for 8 minutes.
Once the cooking time is up, allow the pressure to release naturally for 5 minutes, then perform a quick release for any remaining pressure.
Remove the chicken from the pot and set aside. Switch the Instant Pot back to Sauté mode.
Stir in the heavy cream, Parmesan cheese, and Italian seasoning. Let it simmer for a few minutes until the sauce has thickened.
Return the chicken to the pot, coating it in the creamy sauce. Cook for an additional minute to heat through.
Taste and adjust seasoning as needed.
Notes
Serve over pasta or rice and garnish with fresh parsley.