Preheat the oven to 350°F (175°C).
Slice the bagels in half horizontally.
Place the bacon slices on a baking sheet and bake for 10 minutes, or until crispy.
Remove the bacon from the oven and drain on paper towels.
Place the bagel halves on a baking sheet, cut side up.
Top each bagel half with a slice of cheddar cheese and slice of mozzarella cheese.
Place the baking sheet with the bagels and cheese under the broiler for 2-3 minutes, or until the cheese is melted and bubbly.
Remove the bagels from the broiler and top each half with 2 slices of bacon.
Serve hot and enjoy!