01 - Preheat your grill or oven to 400°F.
02 - Pat the chicken dry and rub with olive oil, smoked paprika, garlic powder, onion powder, salt, and pepper, ensuring even coverage.
03 - Grill chicken for 6 to 8 minutes per side, or roast on a lined baking sheet for 20 to 25 minutes, until internal temperature reaches 165°F. Let rest for 5 minutes before chopping.
04 - Combine mayonnaise, apple cider vinegar, lemon juice, prepared horseradish, Dijon mustard, sugar, garlic powder, black pepper, cayenne pepper, and salt in a bowl. Whisk until smooth and fully incorporated.
05 - In a separate bowl, mix shredded cabbage, mayonnaise, apple cider vinegar, salt, and pepper until evenly coated. Adjust seasoning to taste.
06 - Slice the rested chicken into bite-sized pieces and toss with half of the Alabama white BBQ sauce until thoroughly coated.
07 - Pile the sauced chopped chicken generously onto each toasted bun. Top with a heap of slaw. Drizzle additional white BBQ sauce over the top if desired and add pickles for extra tang.
08 - Serve the sandwiches warm while the chicken is still juicy and the slaw remains crisp.