HEAT oven to 325°F. Place ham slices in shallow baking pan. Roast until internal temperature reaches 140°F.
MIX pineapple and oranges with ham glaze in medium microwave-safe bowl. Microwave on HIGH 2 minutes. Spoon half of glaze over top of ham; roast an additional 10 minutes. Place ham slices on serving platter. Serve with remaining warmed glaze.