In small microwavable bowl, melt chips and shortening uncovered as directed on package of chips. Stir until smooth. When dipping shortcake balls, work with 5 to 10 at a time, keeping the rest in the freezer. Gently dip each shortcake ball two-thirds into chocolate mixture; allowing excess chocolate to drip back into bowl. Sprinkle balls with small amount of graham cracker crumbs. Repeat with remaining shortcake balls and melted chocolate mixture. Place in white or green polystyrene foam to allow chocolate to harden. Once chocolate is hardened, eat immediately or store covered in refrigerator. If refrigerated, uncover and allow shortcake pops to stand at room temperature 15 minutes before serving.