Line a large baking sheet with foil. Lay bacon strips on pan. Bake in preheated oven for 10-15 minutes. Remove strips to a paper towel lined plate. Chop bacon into bits; set aside.
Separate bagel thins into two halves each. Line baking sheet with new foil and place halves on sheet. Spread each halve with about 1 Tablespoon of BBQ sauce. Sprinkle with mozzarella. Top with pineapple bits.
Bake for 10 minutes. Remove from oven and top with chopped bacon and green onions. Serve warm.
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