01 - Combine chicken breasts, broth, smoked paprika, garlic powder, onion powder, salt, and pepper in a saucepan. Bring to a simmer over medium heat, cover, and cook 15-18 minutes until chicken reaches 165°F and is tender.
02 - Transfer cooked chicken to a cutting board. Using two forks, pull chicken apart into bite-sized shreds. Discard excess poaching liquid.
03 - Return saucepan to stove over low heat. Add barbecue sauce, Worcestershire sauce, hot sauce, and brown sugar. Stir until sugar dissolves, about 2 minutes. Add shredded chicken and toss to coat evenly. Simmer 5 minutes.
04 - Preheat oven to 350°F. Slice slider buns horizontally. Place bottom halves on a baking sheet, keeping tops nearby.
05 - Divide sauced chicken evenly among bun bottoms. Top each portion with shredded cheddar cheese, then sprinkle with crispy fried onions.
06 - Place bun tops over assembled sliders. Brush tops generously with melted butter using a pastry brush.
07 - Bake for 8-10 minutes until cheese is fully melted and bun tops are golden brown. Watch closely to prevent burning.
08 - Remove from oven. Garnish with chopped parsley if using. Serve immediately while hot.