Preheat oven to 300 degrees F. Line 2 baking sheets with parchment paper; set aside.
In an extra large mixing bowl, combine peanuts, sesame sticks, cheese crackers, pretzels, rice cereal, corn sticks, and corn nuts. You may need to use 2 large bowls to mix everything.
Melt butter in microwave; Toss butter together with snack mix, coating well.
In a small bowl, whisk together seasoning blend. Pour over butter snack mix then toss together until evenly coated.
Pour Cajun Chex Mix evenly between sheet pans.
Bake in oven 30 minutes, rotating sheets halfway through baking and tossing mixture to evenly bake.
Allow to cool completely. Garnish with additional grated parmesan cheese and dried parsley flakes.
Store in airtight container or storage bags.