01 - Preheat your oven to 425°F. Line a large baking sheet with parchment paper to prevent sticking.
02 - Cut the russet potatoes into ½-inch thick uniform fries. Place them in a large bowl filled with cold water and allow them to soak for 20 minutes; this step helps remove excess starch for crispier results. Thoroughly drain the water and pat the fries completely dry with a clean kitchen towel.
03 - In a small bowl, combine the smoked paprika, garlic powder, onion powder, dried oregano, dried thyme, cayenne pepper, sea salt, and freshly ground black pepper. Mix thoroughly.
04 - Transfer the dried potato fries to a large mixing bowl. Drizzle with olive oil and toss until each fry is evenly coated. Sprinkle the prepared Cajun seasoning blend over the fries and toss again meticulously to ensure full, even coverage.
05 - Spread the seasoned fries in a single layer on the prepared baking sheet. It is crucial that no fries overlap to facilitate even cooking and optimal crisping.
06 - Bake for 30–35 minutes, turning or flipping the fries halfway through the baking process. Continue baking until the fries are golden brown and achieve a desirably crisp texture.
07 - Remove the fries from the oven. If desired, sprinkle generously with fresh, finely chopped parsley. Serve these flavorful Cajun spiced fries immediately while hot.