Bring 500 ml salted water to the boil in a saucepan, add rice and allow to swell for 15-18 minutes over medium heat. In the meantime peel and chop the onion. Clean, wash and chop the peppers. Wash the meat, dab dry and cut into cubes. Put the diced meat on 8 shish kebabs.
Heat the oil in a large pan and fry the skewers all around at medium heat for about 10 minutes. Then season with salt and pepper. 5 minutes before the end of the cooking time add paprika and onion to the rice. Stir the tomatoes into the finished rice, heat up and season with salt, pepper and paprika. Arrange the tomato rice, 2 shashlik skewers and a small bowl of tzatsiki quark, sprinkled with parsley as desired, on a plate. Serve garnished with marjoram as desired