Peel 4 large ripe bananas, cut in thirds and insert a popsicle stick into the cut end of each piece. Melt ¾ cup semisweet or bittersweet chocolate chips. Cover each piece of banana with melted chocolate and sprinkle with coconut. (Reheat chocolate, as needed, to keep it melted.) Place the bananas on a baking sheet lined with parchment or wax paper and freeze until frozen, about 2 hours.