Heat the oil in a large non-stick frying pan over medium-high heat.

Whisk the egg in a bowl.

Put the flour on a plate.

Dip each tilapia fillet in egg on both sides, then put on a plate with flour and flip the fish, so the fish is coated with flour on both sides.

Put the fish on a frying pan. Sprinkle the fish with 1/4 tsp salt and 1/8 tsp of pepper.

Cook the fish for 4 minutes, then flip with a spatula to the other side.

Sprinkle the fish with another 1/4 salt. Cook for 4 more minutes, or until the tilapia is cooked through (flakes easily with a fork).

While the fish is cooking, make the coleslaw: mix the coleslaw mix with mayo and 1/4 tsp salt and 1/8 tsp pepper.

Put the cooked tilapia fish on a slice of bread, add the coleslaw on top of the fish, and top the sandwich with another slice of bread.