1. preheat oven to 450°F Place each fillet on a separate piece of foil.
2. In a bowl, mix the soy, pineapple, oil, garlic and ginger. Spoon the mixture evenly over the tilapia. Top with the green onions; salt and pepper to taste.
3. Fold the foil over each fillet to create and packet. Crimp to seal. Bake for 15 minutes.