For the dressing, squeeze the lemons and mix the juice with the mustard seeds, oregano, olive oil, salt and pepper. Add the bay leaves.
Wash the potatoes and cut into wedges. Wash the chicken, add salt and pepper. Fill the peel of the untreated lemons with the garlic into the belly.
Preheat the oven to 180 ° C. Place the chicken on a baking sheet with the potatoes. Pour the prepared dressing and 1 cup of water over it and put it in the oven. Turn the potatoes every 10-15 minutes so they brown evenly. If necessary, add more water or brush the chicken with oil so that it does not get too dry. After 1 hour, cut the chicken, remove the lemon peel and garlic. Put the chicken back in the oven and leave on the stove for another hour. Serve hot.