Wipe the chicken joints and trim neatly. Melt the butter and oil in a large frying pan. Add the chicken joints and fry gently for about 15 minutes, turning to brown on both sides.
Meanwhile, prepare the onion and garlic, halve, deseed and shred the peppers. Scald the tomatoes and peel away the skins. Slice the tomatoes, then add along with the prepared vegetables to the chicken. Sprinkl