Place a rack in the center of your oven and preheat to 375°F. Line a baking sheet with parchment paper.
Without disconnecting the buns at their sides, slice the slider buns in half horizontally. Place the bottom half in the center of the baking sheet.
In a mixing bowl, combine the chicken, Buffalo sauce, ranch dressing, and garlic powder.
Scatter a small handful of the cheese bottom buns, then top evenly with the Buffalo chicken. Sprinkle the remaining cheese evenly over the top.
Place the top bun over the chicken. In a small bowl, combine the melted butter and Italian seasoning, then brush liberally over the top of the buns.
Bake the Buffalo chicken sliders until the cheese is melty and the tops are golden, about 10 to 12 minutes. Transfer to a cutting board and let cool a few minutes. Carefully slice apart with a serrated knife, and serve.
Notes
TO STORE: Wrap leftover sliders in foil and store them in the refrigerator for 2 to 3 days.
TO FREEZE: Wrap the sliders in a layer of plastic wrap, followed by foil (or toss them in an airtight container or freezer bag); double layers help prevent freezer burn! Freeze for up to 2 months and thaw in the refrigerator before reheating.
TO REHEAT: Warm up leftovers in the microwave or a 350ºF oven until heated through.