To a medium-sized, straight-sided pan, add the butter and melt over medium heat. Once melted, add the buffalo sauce, garlic powder and onion powder and whisk to incorporate. Bring the mixture up to a simmer and stir in the shredded chicken. Turn the heat down to low and let simmer until the chicken is heated through and evenly coated in the sauce, about 5 minutes.
To assemble: Lay the Hawaiian slider rolls on a clean work surface, cut side-up. Using tongs, transfer the buffalo chicken to the bottom half of the rolls. Top each with celery slaw. Spoon the remaining buffalo sauce on the cut-side of the top buns. Place the top half on and skewer each slider.
Celery-Blue Cheese Slaw:
Yield:About 1 cup
Add all of the ingredients to a medium sized bowl and toss to combine. Refrigerate in an airtight container for up to 3 days.