Preheat the oven to 350°F (175°C).
Prepare the shredded chicken and set it aside.
In a large bowl, combine the shredded chicken, ranch dressing, hot sauce, salt, and black pepper. Stir until the chicken is evenly coated.
Carefully cut the dinner rolls in half horizontally, keeping the rolls together if possible. Place the bottom half in a 9×13-inch casserole dish or on a baking sheet.
Spread the buffalo chicken mixture evenly over the bottom buns.
Sprinkle the shredded Mexican-blend cheese evenly over the chicken.
Place the top half of the rolls over the cheese.
In a small bowl, combine the melted butter, Italian seasoning, and garlic powder.
Brush the seasoned butter generously over the tops of the buns.
Cover the dish with foil and bake for 15 minutes.
Remove the foil and continue baking for about 5 minutes, or until the cheese is melted and the tops are lightly golden.
Slice into individual sliders and serve warm.