Preheat the oven to 400°F (200°C).

Line a baking sheet with parchment paper.

In a mixing bowl, combine the cornmeal, flour, salt, and Cajun seasoning.

Coat each catfish fillet in the mixture.

Place the coated fillets on the prepared baking sheet.

Drizzle olive oil over the fillets.

Bake in the preheated oven for 15 minutes or until crispy.