In a large skillet, heat the oil. Add the chicken and cook over high heat, turning once, until deep golden, 10 minutes. Arrange the chicken in a roasting pan, skin side up. Pour off most of the oil from the skillet and add the onion and leek. Cook over moderate heat, stirring, until softened, 5 minutes. Add the tomatoes, thyme and oregano and cook until the tomatoes just begin to break down, 3 minutes. Add the red wine and cook until reduced to 1/4 cup, scraping up any bits stuck to the pan, 5 minutes. Stir in 1 cup of water and pour the mixture into the roasting pan.