Combine first 8 ingredients in a shallow dish.
Place each chicken breast half between 2 sheets of plastic wrap, and pound to 1/4-inch thickness using a meat mallet or rolling pin. Dredge chicken in flour, and dip in the egg substitute mixture.
Heat 1 1/2 teaspoons oil in a large nonstick skillet coated with cooking spray over medium heat. Add 4 chicken breast halves; cook 4 minutes on each side or until done. Remove chicken from pan; keep warm. Wipe the drippings from pan with a paper towel. Repeat the procedure with 1 1/2 teaspoons oil and the remaining chicken.
Melt butter in pan; add 1/4 cup wine and 3 tablespoons juice. Bring to a boil; cook for 10 seconds. Serve immediately over chicken.