Add the chicken, garlic powder, salt, pepper and chicken broth to the Instant Pot.
Place the lid on the Instant Pot and lock it. Make sure the lever is set to seal. Press the manual button and set the time for 8 minutes.
When the time is up let the pressure manually release for 5 minutes, then release the pressure and remove the lid.
Remove the chicken from the Instant Pot and shred it. Add the BBQ sauce and mix together.