Turn the Instant Pot to sauté mode and add olive oil.
Cook chicken pieces with salt and pepper until lightly browned.
Stir in garlic and Italian seasoning for about a minute.
Add pasta, canned tomatoes with juice, and chicken broth. Stir well.
Seal lid and cook on high pressure for 5 minutes. Quick release pressure when done.
Stir in Parmesan cheese, fresh cherry tomatoes, and basil.
Let it sit for a couple of minutes to thicken before serving with extra cheese and basil.