In the bottom of your Instant Pot, stir together chicken broth, quinoa, beans, tomatoes, bell pepper, onion and one tablespoon of taco seasoning. Place chicken on top and sprinkle with remaining taco seasoning. Secure lid of Instant Pot and turn valve to seal.
Set Instant Pot for manual (or poultry) for 10 minutes.
Turn valve to “vent” to quick release pressure. Chicken should be at 165 degrees Fahrenheit or above. When pressure is released, remove lid and sprinkle cheese on top. Place cover back on for 1 minute or until cheese is melted.