Preheat the oven to 375 F. Mix lemon juice, olive oil, salt and spices in a bowl. Line a baking sheet with non stick foil (or spray with non stick spray) put frozen fish fillet on top.
Brush the fillets with the marinade of oil, lemon juice and spices on both sides Put the tray in the oven and bake the fish for 20 minutes or until middle thickest spot is white. Before serving, top can be sprinkled with lemon