Add all ingredients to a large freezer bag. Squish gently to combine. Remove the excess air, seal, and freeze.
Thaw. Cook on low for 4-5 hours or on high for 2-3 hours or until chicken has reached an internal temperature of 165°. Or cook in instant pot on high pressure for 8 minutes with a quick release. Shred. Serve on buns with coleslaw and sliced dill pickles.