Heat the oven to 350 degrees.In a large bowl, whisk together the flour, baking powder, Italian seasoning, milk, egg and cheese until well blended. Add the pepperoni and stir until it is distributed throughout the batter. Set the bowl of batter aside and let it rest for 15 minutes.Grease 3 mini muffin tins. Fill each cup ¾ full. Bake until set and golden brown, 20 to 25 minutes.Remove from the oven and enjoy warm.Serve with warmed marinara sauce for dipping if desired.