Can you fry fish with bread crumbs in olive oil?

Absolutely you can; there are numerous bread recipes that actually call for olive oil. But you can also use your own basic bread recipe and subsitute olive oil for the shortening, butter, etc., that the recipe calls for. The taste will be a bit different, but that's pretty much the only difference.

You can also take it in a different step by the addition of herbs to the bread, giving it more of a Greek flavor, if desired. Another option is sprinkling freshly grated Parmesan cheese on top of the bread when it's about halfway done, which is delicious.