For the BBQ sauce: Combine the ketchup, brown sugar, vinegar, whiskey, salt, garlic powder, onion powder, red pepper flakes and mustard in a saucepan. Heat over medium heat, stirring, until warm and the sugar is melted.
For the chicken: Prepare a grill or grill pan for medium-high heat. Rub the chicken breasts and thighs with the oil, and sprinkle all over with the salt and pepper. Grill for 8 to 9 minutes per side, until white in the center. Shred the chicken and mix with some of the sauce.
For the coleslaw: Stir together the mayonnaise, vinegar, sugar and some salt in a large bowl. Add the jalapeno, pineapple, green cabbage and red cabbage; toss well.
Serve the slaw and shredded chicken on the toasted buns.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.