Preheat your oven to 250°F (120°C) and line a baking sheet with parchment paper.

In a large mixing bowl, combine Cheez-Its, Cheddar cheese flavored Chex Mix, Bugles, Goldfish crackers, mini saltines, and pretzel twists.

Sprinkle freshly grated Parmesan cheese, olive oil, crushed red pepper, garlic powder, kosher salt, and black pepper over the crunchy base and toss to coat.

Spread the mixture onto the prepared baking sheet in an even layer, and add extra Parmesan on top if desired.

Bake for about 15 minutes, stirring halfway through. Remove when lightly toasted and mostly dry.

Let the mix cool completely on the baking sheet before storing in an airtight container.