Preheat to 350 degrees.
Slice the rolls in half horizontally. Don’t pull them apart. Place the bottom half in the center of a baking sheet.
In a mixing bowl, combine the chicken, Buffalo sauce, ranch dressing, and ½ cup each of the cheddar and Monterey cheeses.
Spread the buffalo chicken mixture evenly over the bottom half of the rolls. Sprinkle the remaining cheeses evenly over the top.
Place the top rolls over the chicken. In a small bowl, combine the melted butter, Italian seasoning, and garlic salt, then brush liberally over the top of the rolls.
Cover with foil and bake the buffalo chicken sliders until the cheese is melted and the tops are golden, about 10 to 12 minutes. Carefully slice the rolls with a serrated knife, and serve warm.