Combine taco seasoning mix and spices. Set aside. In a 2 gallon storage bag, combine crispix, corn chips and onions. Pour oil over cereal mixture, tossing gently to toss. Add taco seasoning mix to bag, tossing gently until cereal mixture is coated. Store in airtight container. Per 1/2 cup serving: 100 calories, 4 grams fat.