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