01 - Heat vegetable oil in a large pot over medium heat. Add popcorn kernels; cover and shake occasionally. When popping slows to 2 seconds between pops, remove from heat. Transfer popcorn to a large bowl, discarding unpopped kernels.
02 - Combine melted butter, granulated sugar, pumpkin pie spice, and salt in a small bowl and whisk until fully blended.
03 - Drizzle the pumpkin spice mixture evenly over the warm popcorn. Toss gently to coat every kernel.
04 - Melt white chocolate chips and orange candy melts in separate bowls using a microwave in 30-second intervals, stirring between each interval, or use a double boiler until smooth.
05 - Drizzle the melted white chocolate and orange candy coating over the popcorn.
06 - Sprinkle with optional sprinkles immediately to ensure adhesion. Let sit for about 10 minutes, allowing the drizzle to firm up.
07 - Break into clusters and serve fresh.