01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - Cut the potatoes into ¼-inch thick fries. Soak them in cold water for 20 minutes to remove excess starch. Drain and pat dry thoroughly.
03 - In a large bowl, toss the dried potato fries with olive oil, smoked paprika, garlic powder, onion powder, oregano, thyme, cayenne pepper, black pepper, and sea salt until evenly coated.
04 - Arrange the fries in a single layer on the prepared baking sheet. Bake for 30–35 minutes, flipping halfway through, until golden and crisp.
05 - In a small bowl, whisk together mayonnaise, hot sauce, lemon juice, smoked paprika, and salt until smooth. Refrigerate until ready to serve.
06 - Serve the hot Cajun fries immediately with spicy mayo on the side.