1. Preheat oven to 400°. Place 1 water chestnut slice on top of 1 pineapple chunk; wrap with 1 bacon piece. Repeat procedure with remaining water chestnuts, pineapple, and bacon. Place, seam sides down, in a lightly greased broiler pan.
2. Bake at 400° for 20 to 25 minutes; baste both sides with teriyaki sauce. Turn and bake 20 more minutes or until bacon is crisp. Serve immediately.