Absolutely. This recipe can be scaled up to feed four, but if you are only using one pan, I'd suggest keeping the tomato and aromatic amounts the same, and just adding two more fish fillets to the top! If you have two pans you can use at the same time, just double the recipe and you'll have dinner for four in no time. If you plan to do the former, make sure you have extra rice or bread around to make sure no one feels forgotten by the smaller amount of tomatoes available.