01 - Preheat oven to 425°F and line a large baking sheet with parchment paper.
02 - Cut potatoes into 1/4-inch thick fries. Soak in cold water for 20 minutes to remove excess starch. Drain and pat thoroughly dry with clean towels.
03 - In a large bowl, combine dried potato fries with olive oil, smoked paprika, garlic powder, onion powder, oregano, thyme, cayenne pepper, black pepper, and sea salt. Toss until evenly coated.
04 - Arrange fries in a single layer on prepared baking sheet. Bake for 30 to 35 minutes, flipping halfway through, until golden brown and crispy.
05 - While fries bake, whisk together mayonnaise, hot sauce, lemon juice, smoked paprika, and salt in a small bowl until smooth. Refrigerate until serving.
06 - Serve hot Cajun fries immediately with spicy mayo dip on the side.