Blend pepper, salt and flour. Coat chicken with mixture and set aside. In a heavy-bottomed skillet, heat oil. Add chicken breasts and brown both sides. Remove chicken and set aside. Add wine to skillet and stir until heated. Add lemon juice, chicken stock and mushrooms. Toss ingredients then reduce heat and cook 10 minutes or until sauce is partially reduced. Add chicken to mixture and cover with sauce. Cover and cook 5-10 minutes or until chicken is thoroughly cooked. Serve each chicken breast covered with sauce and garnished with chopped parsley.
Pair with a vegetable side dish.