Pour chicken broth into the inner pot of your instant pot.
Whisk in the tomato paste.
Add in the frozen chicken breasts, corn, black beans, diced green chilies, salt, and pepper.
Mix.
Close lid and set to sealing.
Cook on high pressure for 25 minutes.
Natural Pressure Release (NPR) for 10 minutes.
Release the rest of the pressure and remove the lid.
Serve hot and top with fresh cilantro, shredded cheese, and tortilla chips.
Refrigerate or freeze any uneaten instant pot chicken tortilla soup without toppings.