Prepare dipping sauce: Pour undrained pineapple into the blender. Secure lid and process until its a thick puree. Pour pineapple into the saucepan and add cornstarch; blend. Add pineapple orange juice and barbecue sauce; blend. Bring to a boil, then reduce heat and simmer, stirring until sauce thickens, about 3 minutes. Remove from heat and set aside. Prepare chicken nuggets: Preheat oven to 400 F. Whisk the egg and milk together in a small mixing bowl. Place cornflakes in a plastic bag. Dip chicken pieces in egg mixture, then shake with cornflakes to coat. Put coated chicken on a baking sheet. Carefully place baking pan in oven and bake for 15 minutes. Carefully remove the baking pan from the oven. Serve nuggets with warm pineapple-orange dipping sauce. Posted to recipelu-digest Volume 01 Number 664 by James and Susan Kirkland on Feb 01, 1998