Spray bottom and sides of IP with nonstick cooking spray.
Add 1 cup of water to bottom of IP. Add the chicken breasts. Sprinkle chicken with taco seasoning. Add the black beans and corn, salsa, and lastly rice.
Add the remaining 1 ½ cups of water to the IP. Press the rice into the water so that its fully submerged.
Set IP valve to sealing. Cook on manual HIGH PRESSURE for 25 minutes. Allow the pressure to naturally release for 15 minutes, then turn to quick release.
Carefully remove the lid. You can either shred the chicken directly in the instant pot, or you can transfer the chicken to a large bowl or plate and shred it there, then transfer it back to the instant pot. Mix everything well.
Portion into bowls then top with desired toppings. Enjoy!
Notes
You can cook the chicken in the slow cooker, but you will have to cook the rice separately and add it at the end. Add just 1/4 cup of water to your slow cooker along with the chicken, taco seasoning, black beans, corn, and salsa. Cook on low for 5-6 hours or high for 3-4 hours. If you use white rice instead of brown rice, reduce the water to just two cups and cook on high pressure for just 10 minutes, then natural release for 10 minutes before turning to quick release. Store leftovers in an airtight container in the fridge for 4-5 days.