Preheat your oven to 300 degrees F.
Line a baking sheet with parchment paper and spread out the mixed nuts.
In a small bowl, combine the pumpkin pie spice and brown sugar.
In a separate small bowl, crack one egg, separating the yolk from the white. You will use the egg white.
Drizzle the egg white over the nuts coating evenly.
Sprinkle the pumpkin pie spice mixture over the nuts and toss evenly. Then bake in oven for about 20 minutes. Flip over every so often to bake evenly.
Remove the nuts and let cool.
While the nuts cool, in a large bowl combine the chex cereal, pretzels, Reese's pieces and candy corn.
Once the nuts are cooled, add the nuts to the chex mixture and toss.
Store in an air tight container or mason jar.