Food Network teaches how to crush, slice and mince garlic. Peel off some of the papery skin from the garlic and then smash the head of garlic with the heel of your hand to loosen the cloves; if you only need a few cloves, leave the head intact and pull some off. Separate the cloves. To peel a clove, cut away the root end with your knife. Lay the flat side of the knife over the clove while holding the knife handle, then with the heel of your free hand carefully whack the knife against the garlic to separate the skin from the clove. To crush the peeled garlic, lay the flat side of the knife over the clove and smash it again. To slice peeled garlic, lay the clove flat on the cutting board and hold it with the fingertips of one hand, keeping them curled under. Using a rocking motion with the knife, make thin slices by moving the knife slowly across the clove. To mince peeled garlic, lay the flat side of a knife over the clove and smash it. Roughly chop the clove then move your free hand flat across the tip of the knife and use a rocking motion to chop the garlic until it’s finely minced.
Whisk the vinegar, mustard, lemon juice, garlic, olive oil, salt, and pepper in small bowl to blend. Combine the vinaigrette and chicken pieces in a large resealable plastic bag; seal the bag and toss to coat. Refrigerate, turning the chicken pieces occasionally, for at least 2 hours and up to 1 day.
Preheat the oven to 400 degrees F. Remove chicken from the bag and arrange the chicken pieces on a large greased baking dish. Roast until the chicken is just cooked through, about 1 hour. If your chicken browns too quickly, cover it with foil for the remaining cooking time. Transfer the chicken to a serving platter. Place the baking dish on a burner over medium-low heat. Whisk the chicken broth into the pan drippings, scraping up any browned bits on the bottom of the baking sheet with a wooden spoon and mixing them into the broth and pan drippings. Drizzle the pan drippings over the chicken. Sprinkle the lemon zest and parsley over the chicken, and serve.