Place the chicken in the instant pot. Add 1 cup water or chicken broth. Place the lid on the instant pot and turn the valve to the sealed position. Press pressure cook or manual button. Set cook time for 40 minutes. This allows the chicken to shred easily from large boneless chicken breasts.
Once the instant pot stops counting release the pressure. Drain the juice from the pot and shred the chicken.
Mix together all the remaining ingredients in a medium bowl for the sauce. Whisk well making sure there is no lumps. Place in fridge until ready to use.
Place chicken on the solder bun and pour the Alabama white sauce over the top and top with top slider bun.