This question tends to annoy me. It is OKAY to eat fish and seafood when you are pregnant. The only thing you would want to watch out for is un/undercooked meat (and thats for anyone, yikes!). The only fish you might want to eat in moderation is Tuna, because it does carry a small amount of mercury (this is because Tuna are not usually harvested until they are older, all fish has mercury, and since they are older they have more of it). So while eating long john silvers might not be the best for nutrition value, its safe to eat.