Preheat your oven to 350°F (175°C).
Slice the slider buns in half horizontally.
In a baking dish, arrange the bottom halves of the buns.
Spread a layer of pizza sauce on each bottom half.
Sprinkle a generous amount of mozzarella cheese over the sauce.
Add the pepperoni slices evenly on top of the cheese.
Sprinkle Italian seasoning and garlic powder over the toppings.
Place the top halves of the buns on the sliders.
Brush the tops of the buns with olive oil.
Bake in the preheated oven for 15-20 minutes until the cheese is melted and buns are golden.