In the bottom of the Instant Pot pot, mix together chicken broth, onion, garlic, pepper, adobo sauce, chili powder, cumin, oregano, paprika, salt, and pepper.
Place the chicken breasts in the bottom of the Instant Pot and make sure that the chicken is mostly covered by the sauce.
Place lid on top of Instant Pot and turn valve to SEALING. Press MANUAL button (or PRESSURE COOK button) and set timer to 15 minutes (22 minutes if chicken is frozen).
When chicken is finished cooking, move valve to VENTING and do a quick release of the pressure.
Remove chicken and transfer to a plate or cutting board (leaving liquid in the pot).Shred or slice the chicken.
You can use the chicken in tacos, burritos, on top of salads, or even in a bowl.
To assemble your own bowl, place rice in the bottom of the bowl. Top with cooked chicken, pinto or black beans, guacamole, corn, pico de gallo, and shredded cheese.