Cut each beef frank crosswise into thirds. Set aside. Place 2 layers of paper towels on microwavable plate. Place bacon in single layer on paper towels. Cover with 1 layer of paper towel. Microwave on HIGH 2 to 3 minutes or until bacon is partially cooked. Let cool slightly. Cut each bacon slice crosswise into thirds.
Wrap 1 piece bacon around 1 piece of beef frank. Alternately thread 1 bacon-wrapped frank with 1 piece of pineapple and bell pepper onto each skewer.
Grill over medium heat 1 to 2 minutes per side or until lightly charred, brushing with barbecue sauce.