1 In a large skillet, heat oil; add the chicken and mushrooms. Cook over medium-low heat until golden, about 3 minutes per side. Add the garlic and salt and pepper to taste and stir until blended. 2 Transfer the chicken and mushrooms to a side dish. Add the wine or apple juice to the skillet. Increase the heat to high and bring the wine or apple juice to a boil, scraping up any browned pieces from the bottom of the skillet, until reduced to a thin film.3 Add the tomatoes and heat to boiling, breaking the whole tomatoes into pieces with the side of a wooden spoon or spatula. Return the chicken, mushrooms and any juices to the skillet.4 Add the dried oregano or, if using fresh oregano, add later. Bring to a gentle simmer over medium-low heat, stirring occasionally; cover and cook until the chicken is cooked through, about 8 minutes. 5 Transfer the chicken to a serving platter. Boil the tomato sauce over high heat, stirring occasionally, until slightly thickened, about 3 minutes. Spoon the tomato sauce over the chicken and serve immediately.