01 -
Slice bacon into 1/2-inch pieces. Cook in a skillet over medium heat, stirring frequently, until crisp, about 7–10 minutes. Transfer to a paper towel-lined plate using a slotted spoon.
02 -
Preheat the oven to 325°F (165°C) while you prepare the sliders.
03 -
In a bowl, mix shredded chicken with 3/4 of the cooked bacon bits and slightly less than 1/2 cup ranch dressing until moist but not overly wet.
04 -
Using a serrated knife, cut the Hawaiian rolls horizontally as one sheet to create a top and bottom layer. Place the bottom layer in a 9x13 inch baking dish or on a sheet pan.
05 -
Spread a thin layer of ranch dressing on the cut side of the bottom rolls. Cut cheese slices into quarters and place one square on each roll.
06 -
Spread the chicken-bacon mixture evenly over the cheese. Top each with two more cheese squares and sprinkle with the reserved bacon bits.
07 -
Place the top half of the rolls over the filling. Brush with ranch dressing and sprinkle with Parmesan cheese if using.
08 -
Cover tightly with foil and bake for 20 minutes. Remove foil and bake an additional 7–10 minutes until tops are golden and cheese is melted.
09 -
Let cool for 5 minutes. Garnish with chopped chives if desired. Cut along seams to separate and serve warm.