Quick Haddock Dinner, Suitable for Guests!

Tonight I made a really quick dinner that was totally suitable for guests. Healthy and delicious! And cheap! So let me share it with you.
Here are the ingredients:
3 Haddock fillets (or one per person)
1 14 oz can of diced tomatoes (I got mine from the Italian market so they had no salt added)
2 tsp of capers (something I didn't think I liked but I have found add a nice flavour even if I don't like to bite into them, I just pick out the whole ones when I see them)
1 zucchini, cut in half and sliced
1 tbsp Italian Seasoning (I have the no salt version but you can use the regular or just mix up equal parts of dried basil, oregano, thyme and rosemary)
2 tbsp of crumbled blue cheese (optional or use another cheese like Cambonzola or Gorgonzola or even Parmesan)

Spray a baking dish with olive oil. Place the fish fillets on the bottom of the dish. Pour the rest on top, mixing it all together as best as you can. Bake for 20 minutes at 350 if the fillets are thin. If they are thick you may want to cook longer. You can test to see if they are done by poking them with a fork in the middle of the dish and seeing if they are flaky. Be careful not to over cook the fish! I served this on polenta I had from a roll that I just cut into slices and grilled but you could use pasta, I would go with spaghetti, linguine or fettuccine. Or risotto or polenta. Serve with Parmesan on the side for sprinkling on.