Sprinkle salt on the chicken.
Peel the potatoes and cut each into 4 elongated wedges.
Slice the cabbage into wedges into elongated pieces starting from the stem. Each wedge should be held together by the stem.
Use a wide baking dish with a lid and layer the olive oil, onions, cabbage wedges, potatoes and chicken pieces. Weave them all together as shown in the photo, crowding them in the dish.
Mix the dressing well and pour over the ingredients in the dish.
Cover with crinkled and wet parchment paper and cover the dish with its lid.
Bake at 375° for one hour. Remove lid and paper and bake for another 20 minutes or until charred at the edges.