Press sauté on the Instant Pot and heat the olive oil.
Season the chicken with salt and pepper, then sear on both sides until lightly golden.
Add minced garlic and cook for 1 minute until fragrant.
Pour in the chicken broth, heavy cream, parmesan, and Italian seasoning. Stir to combine.
Close the lid, set the valve to sealing, and cook on high pressure for 8 minutes.
Quick release the pressure once done.
Remove the lid, stir the sauce, and check seasoning.
Serve chicken with sauce spooned over the top, garnished with fresh parsley.