Preheat your oven to 425°F (220°C).
Arrange the mini bagels, cut-side up, on a baking sheet lined with parchment paper.
Spoon a thin layer of pizza sauce over each bagel half, spreading it evenly.
Sprinkle shredded cheese over the sauce-covered bagels.
Place a slice of turkey pepperoni on top of each bagel half.
Bake in the preheated oven for about 6 minutes, or until the cheese is melted and bubbly, and the pepperoni is lightly browned.
Once done, remove from the oven and let the mini pizza bagels cool slightly before serving.