Pour the popped popcorn into a large bowl and set aside. Line a sheet pan with parchment or wax paper.
Pour the white melting wafers into a heat safe bowl, and microwave in 15 second bursts until melted and smooth, stirring often. Once melted, pour the melted candy coating over the popcorn. Stir until the popcorn is evenly coated.
Once covered, pour the popcorn onto the prepared sheet pan and spread out into an even, thin layer.
While the white chocolate is still wet, sprinkle on the pretzel nuggets, Reese's Pieces and the peanuts. Gently press the toppings onto the popcorn so they'll stick to the white coating. Do this before the coating sets!
Drizzle on the melted semisweet chocolate.
Refrigerate until the chocolates set, about 15-20 minutes. Then break the chocolate popcorn into chunks and serve!
Store any leftovers at room temperature in an airtight container.