Place cereal in a large bowl. Pour melted chocolate over cereal and stir to coat all cereal in chocolate. Transfer to a large zip-lock bag.
In a small bowl combine pudding mix and powdered sugar and whisk to mix well. Pour into plastic bag and zip to close. Shake the bag to coat well. Allow chocolate to harden, then break cereal into smaller chunks. Store in airtight container. Enjoy!
Flavor tip: Swap out the white chocolate chips for milk or semisweet chocolate.