Prepare popcorn according to package directions; remove unpopped kernels. Combine popcorn, snack mix and corn chips in a large roasting pan; set aside.
In small bowl, combine butter, Worcestershire, onion and garlic powders. Slowly pour mixture over popcorn snack mix, stirring to combine.
Bake in a preheated 250°F oven 45 minutes, stirring every 10-15 minutes. Remove from oven and allow to cool. Store in an airtight container.
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