On a dinner plate, combine flour, garlic powder, cumin and salt and blend well.
Slice cod fillets into large bite-sized pieces (about 8 chunks).
Heat oil in a large, non-stick frying pan to high temperature, but don't let oil smoke or burn.
Dredge fish pieces in flour mixture and fry until golden in color and cooked through completely. If you need to cook in 2 or more batches because of the size of the pan, you can keep the first batch(es) in the oven at 300 degrees while cooking the other pieces.