Combine cereal, corn chips, melba toast, pretzels, and almonds in a large bowl. Whisk butter and barbecue sauce together in a small bowl, then drizzle over cereal mixture. Sprinkle evenly with chili powder, oregano and cayenne and toss until well combined.
Empty mixture onto rimmed baking sheet and spread to distribute evenly. Bake stirring every 15 minutes, until golden and crisp, about 45 minutes.
Cool to room temperature.
Note: I found most of the ingredients in the bulk section. I took a one cup measuring cup and measured out what I needed -- plus a bit more for snacking!