Preheat the oven to 350°F. Line a 9x9 baking dish or casserole dish with parchment paper.
In a large bowl, combine the shredded chicken, buffalo hot sauce, ranch dressing, salt, pepper, garlic powder, and paprika. Mix well until the chicken is evenly coated.
Slice the slider buns in half horizontally. Place the bottom halves into the lined baking dish.
Divide the buffalo chicken filling evenly over all the bottom buns. Top generously with shredded cheese. Place the top halves of the buns back on to close the sliders.
In a small bowl, stir together the melted butter, garlic powder, and Italian seasoning. Brush this mixture generously over the tops of the buns using a pastry brush.
Cover the baking dish with foil and bake at 350°F for 15 minutes. Remove the foil and bake for an additional 5-10 minutes, until the tops are lightly golden and the cheese is melted and bubbly.
Remove from the oven. Cut apart and serve immediately while hot.