First, place oil into a large cast iron skillet or pot and put it on medium-high heat. You need enough oil in the pot to deep fry, about 1 - 2 inches.
Second, cut the fish filets into strips. I like my fish to be cut into thin strips so that there is more surface area for the fry mix to stick to it. This will give you a crispier piece of fish and reduce the amount of time the fish has to spend frying.
Third, combine the Louisiana fish fry mix and the lemon pepper seasoning in a separate bowl and mix well.
Then, once your oil has reached 350 degrees, dip fish pieces into the dry mixture and coat evenly.
Next, shake off the excess fry mix off of the fish filets before placing them one by one into the hot oil. Don't overcrowd the pan.
Then, fry fish pieces until they become crispy about 3-5 minutes.
Once, your fish is full fried and crispy, take them out and place on a paper towel to let the excess oil drain. (I like to line my wooden cutting board with paper towels for this purpose.)
Finally, serve hot with your favorite side dish like crispy French fries, homemade hush puppies, or onion rings and don't forget the tartar sauce, ketchup, and hot sauce!