In a gallon size Ziploc bag or large bowl, combine marinade, zest and chicken; marinate for at least 1 hour to overnight, turning the bag occasionally. Drain the chicken from the marinade and sprinkle with the adobo seasoning.
Preheat grill to medium high heat. Add chicken to grill and cook, flipping once and basting with reserved 1/4 cup marinade until cooked through, about 5-6 minutes on each side.
Meanwhile throw lemon and orange slices on grill for a minute or so and use as a garnish.
When chicken is done, sprinkle with parsley. Serve immediately, garnished with parsley, if desired.
Marmalade: In a small pot, heat oil and sauté shallot until tender. Add half of the tomatoes and the water. Cook 3-4 minutes. Stir in marmalade and vinegar and cook, stirring occasionally, 4 minutes or until tomatoes burst and sauce begins to thicken. Stir in remaining tomatoes and cook 2 minutes or until thoroughly heated. Stir in basil. Season with Adobo to taste. Spoon sauce over Citrus Grilled Chicken and grilled bread.