01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - Scrub and peel potatoes if desired. Cut into 1/4-inch thick fries.
03 - Soak cut potatoes in cold water for 20 minutes to remove excess starch. Drain and pat dry thoroughly.
04 - In a large bowl, toss fries with vegetable oil, smoked paprika, garlic powder, onion powder, oregano, thyme, cayenne, salt, and black pepper until evenly coated.
05 - Spread fries in a single layer on prepared baking sheet. Bake for 15 minutes, flip, then bake another 15 minutes until golden and crispy.
06 - In a small bowl, whisk together mayonnaise, hot sauce, lemon juice, smoked paprika, and pinch of salt until smooth.
07 - Serve hot Cajun fries immediately with spicy mayo on the side.