Preheat the oven to 200°C.

Mix olive oil, red wine vinegar, oregano, chilli flakes, and salt and pepper in the baking dish. Cover the whole bottom.

Cut tomatoes into small pieces and green peppers into thin strips or cubes.

Put the vegetables in the baking dish and mix well with the oil and spice mixture.

Crumble half of the feta cheese in the baking dish, then mix. Then, crumble the rest of the feta on top.

Sprinkle some oregano and chilli flakes on top for decoration, then drizzle with olive oil.

Bake for 30 minutes.