To start, cut out the backbone from the chicken with sheers or a sharp knife. Press down hard on the breast bone to break it so the chicken can lay nice and flat. Pat the entire chicken dry.
Season the outside of the chicken with a sweet BBQ rub. Pull up the skin around the breast and season the inside adding more flavor to the meat. Make sure to get all sides.
Preheat the grill to 375 degrees and set it for indirect heat.
Grill the chicken until the breast registers an internal temperature of 160 degrees.
Remove it from the grill and let it rest for10-15 minutes.
To make the buffalo sauce: in a saucepan, add Franks hot sauce, a stick of butter and garlic powder. Simmer the ingredients over low heat until the sauce thickens.
To make pickled onion: slice the entire red onion and move the sliced pieces into a mason jar. In a sauce pan, bring to a boil, water, white vinegar, and peppercorns. Pour the mixture into the mason jar and seal shut.
Using heat resistant gloves, shred the chicken.
Place the meat into a large bowl and pour in the buffalo sauce. Mix the ingredients together.
Toast the buns and assemble the shredded buffalo chicken sandwich. Enjoy!
Notes
Use a rotisserie chicken if short on time or don't have a grill.Use bottled buffalo sauce for convenience.Make sure to rest the chicken before shredding.