Use a 6-quart Instant Pot or whatever brand of electric pressure cooker you have. Place the seal in place on the cover. Spray the liner with cooking spray for easy cleanup.
To the Instant Pot inner pot, add ½ cup buffalo sauce and chicken broth. Stir.
Place the chicken breasts into the sauce. Sprinkle the salt and pepper over the chicken.
Add the cover and set it to sealing. Cook on high pressure for 12 minutes. Let the pressure naturally release for 10 minutes, then do a quick release of any remaining pressure and remove the cover.
Remove the chicken breasts. Shred or slice the chicken. Grab a hand mixer and shred the warm chicken right away in a bowl. Using two forks will also work, as well as a stand mixer with a paddle attachment. For slicing, cool the chicken. It will be easier to slice once chilled.
Add the remaining ½ cup of buffalo sauce and stir into the chicken. If you would prefer a more mild flavored chicken, leave the remaining buffalo sauce off and add as needed.
Store the shredded chicken in an airtight container in the refrigerator for up to four days.
Notes
Note 1: Chicken stock or vegetable stock will also work. Note 2: Use a buffalo wing sauce and not a hot sauce. They are not the same.