01 - Preheat oven to 350°F (175°C). Line a large baking sheet with parchment paper to prevent sticking.
02 - In a large mixing bowl, whisk together olive oil, melted butter, garlic powder, onion powder, smoked paprika, cayenne pepper, chili powder, dried oregano, kosher salt, and ground black pepper until fully combined.
03 - Add pretzel chips to the bowl and toss thoroughly to ensure even coating with the spice mixture.
04 - Spread coated pretzel chips evenly in a single layer across the prepared baking sheet.
05 - Transfer to the oven and bake for 12 to 15 minutes, stirring once halfway through, until chips are crisp and aromatic.
06 - Remove from oven; immediately sprinkle with Parmesan cheese and chopped parsley, if desired, while chips are warm.
07 - Allow pretzel chips to cool completely before serving or transferring to an airtight container for storage.