Preheat oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Line a tray with baking paper. Knead minced meat, egg, breadcrumbs, 1 level teaspoon salt and 1⁄2 teaspoon pepper. Form 4 large meatballs from it.
Heat 2 tablespoons of oil in a large frying pan. Fry the meatballs in it at medium heat on each side for about 3 minutes.
In the meantime, wash the thyme for the crust, shake dry and remove the leaves. Coarsely chop the olives. Crumble the feta. Mix thyme and olives with 2⁄3
Place the meatballs on the baking tray (put the pan aside), spread the crust on the meatballs. Bake in a hot oven for about 8 minutes.
Clean and wash the zucchini and peppers. Cut the zucchini lengthwise into thin strips with a peeler. Dice the bell peppers. Heat the rest of the oil in hot meatball frying fat. Fry the bell peppers, zucchini and remaining thyme for 4-5 minutes while turning.
Season vegetables with salt and pepper. Serve with the meatballs. Flatbread tastes good with them.