To make the batter, whisk together the flour, baking powder, Cajun seasoning, salt, and pepper in a medium-sized mixing bowl.
In a separate bowl, beat the egg and milk together until well combined. Then, pour the egg mixture into the flour mixture and stir until you have a smooth batter.
Once your batter is ready, it's time to coat the corn kernels. Add the corn kernels to the bowl of batter and stir until they're fully coated.
In a large skillet or deep fryer, heat enough vegetable oil to cover the corn kernels over medium-high heat. Once the oil is hot, use a slotted spoon or tongs to carefully drop the coated corn kernels into the oil.
Fry the corn kernels for 2-3 minutes or until they're golden brown and crispy. Be sure to stir the corn occasionally to ensure that all sides are evenly cooked.
Once the corn is fried, use a slotted spoon or tongs to transfer it to a plate lined with paper towels to drain excess oil. Serve the Cajun fried corn hot as a side dish or appetizer.