Place the chicken breasts in the bottom of the Instant Pot in a single layer.
Pour the chicken broth over the meat.
Sprinkle salt, pepper, and garlic powder evenly on top.
Close the lid and set the valve to sealing.
Select "Pressure Cook" and set the timer for 10 minutes on high pressure.
Let the pressure release naturally for 5 minutes, then carefully turn the valve to release the rest.
Open the lid and move the chicken to a bowl.
Shred the chicken with two forks until it pulls apart into small pieces.