First, wash and cut the vegetables into cubes roughly 3 cm in size. We put them in an enamel baking tray. Crumble feta or Balkan cheese over the vegetables and mix everything lightly. Next, place the fish fillets on the mixture, sprinkle with spices, salt and pepper. Drizzle with lemon juice. (If you like, you can add grated cheese on top of the fish, which will spread while baking.) Cut the garlic in half and drizzle with olive oil. Add to the tray and drizzle everything with olive oil. Preheat the convection oven to 215 °C and bake for 35 minutes at 200 °C.