Preheat oven to 400 . In a small bowl,soak 24wooden toothpicks in warm water. Lightly coat a large rimmed baking sheet with cooking spray.

In a medium bowl,combine pineapple,lime zest and juice,salt,and pepper: toss well to coat. Using a soaked toothpick,skewer in this order-a piece of scallion,a bit of bacon,a scallop half,and a cube of marinated pineapple. Place onto the prepared baking sheet,standing vertically,with the pineapple side down. Repeat with remaining ingredients.

Bake for 12-15 mins,until the scallops and bacon are cooked through. Transfer to a platter and serve with teriyaki sauce.