Preheat the oven to 350°F. Line a large baking sheet with parchment paper.
Cut the Hawaiian Rolls in half horizontally, keeping them attached. Place the bottom halves in a baking dish.
In a small bowl, combine melted butter, minced garlic, and chopped parsley to create a garlic-butter mixture. Add a pinch of salt.
Using a pastry brush or a spoon, spread half of the garlic butter mixture evenly over the bottom rolls.
Arrange the shredded chicken evenly over the buttered Hawaiian Rolls and sprinkle crumbled bacon on top.
Using a spoon, drizzle Ranch Dressing evenly over the layer of shredded chicken and crumbled bacon, ensuring thorough coverage.
Place Provolone cheese slices over the Ranch-dressed shredded chicken.
Sprinkle a generous layer of shredded Cheddar cheese on top of the Provolone.
Place the top half of the Hawaiian Rolls over the layered ingredients, creating a sandwich.
Use a brush to generously coat the surface layer of the Hawaiian Rolls with the remaining garlic butter mixture. Sprinkle with grated Parmesan cheese.
Bake in the preheated oven, uncovered, for about 15-20 minutes or until the cheese has melted and the sliders are heated through.
Remove from the oven and sprinkle grated Parmesan cheese over the sliders for an extra layer of flavor, and serve.