Line a baking sheet with parchment. Grease with cooking spray.
Insert a wooden skewer or heavy-duty cake-pop stick through top of each apple. In a medium microwave-safe bowl, melt candy melts on high until smooth, stirring halfway through, about 3 minutes total.
Dip apples in melted candy by tilting bowl and turning apples to coat, spooning additional melted candy over apples, if necessary. Place dipped apples on prepared baking sheet. Place sheet in refrigerator to chill for at least 30 minutes.
Melt chocolate chips in a small microwave-safe bowl on high until smooth, stirring at 20-second intervals, about 1 minute. Spoon chocolate into one corner of a ziplock bag; using scissors, cut a small hole in corner. Pipe eyes and mouth on each apple. Chill apples at least 10 minutes or until ready to serve.