Using a large serrated knife, slice the entire package of rolls in half all at once, separating the tops from the bottoms. Place the bottom layer of rolls into the prepared baking pan, cut side up.
In a large bowl, add the diced chicken, bbq sauce, diced pineapple, diced red onion, and cilantro. Mix to combine everything.
Sprinkle half of the mozzarella cheese over the rolls. Spread the chicken mixture over the top of the cheese, then top with the remaining cheese. Finish by place the other half of the rolls on top.
In a small bowl, mix melted butter, pineapple juice and garlic powder. Brush over the top of the rolls.
Cover the baking dish with foil and bake for 15 minutes, remove the foil and bake for an additional 10 minutes or until the tops are golden brown, and the cheese is melted.
Cut into individual sliders and serve warm. Enjoy!