01 - In a large bowl, combine ground beef, salt, pepper, smoked paprika, garlic powder, and onion powder. Mix gently until just combined; avoid overworking the meat.
02 - Divide the seasoned beef mixture into 12 equal portions and form into small patties, shaping them slightly larger than the buns to account for shrinkage during cooking.
03 - Preheat grill or skillet over medium-high heat until hot.
04 - Grill or cook patties for 2 to 3 minutes per side until browned and cooked through, reaching an internal temperature of 160°F.
05 - During the final minute of cooking, brush each patty with BBQ sauce and top with half a slice of cheddar cheese. Cover briefly to melt the cheese.
06 - In a small bowl, toss coleslaw mix with mayonnaise and apple cider vinegar. Season with salt and pepper to taste.
07 - Split brioche buns and brush cut sides with melted butter. Toast until golden brown.
08 - Place a beef patty on each bottom bun, then layer with coleslaw, red onion, pickles, and chives. Cap with top bun and serve immediately.