Clean, wash and cut the leek into rings. Wash chicken legs and pat dry. Heat oil. Sauté chicken legs in it for about 5 minutes. Season with salt and pepper. Add pan-fried vegetables and leek and fry.
Deglaze with 3/8 litres of water. Add dried marjoram. Cook everything over medium heat for about 10 minutes. Wash fresh marjoram, pluck off leaves and stir in. Take out meat and vegetables and keep warm.
Stir the chili con carne spice and tomato paste into the sauce. Cook for about 4 minutes. Arrange chicken legs with vegetables and sauce on a plate.