Preheat the broiler. Line a broiler pan with foil. Arrange the chicken
quarters on prepared pan, bone side up. Sprinkle with lemon juice, chopped
rosemary, pepper and garlic.
Broil chicken 6 inches from heat until lightly browned, about 10 to 15
minutes. Turn the chicken. Broil until lightly browned and juices run clear
when chicken is pierced with the tip of a knife, about 15 to 20 minutes.
Remove pan from oven; coat the chicken evenly with mustard. Return to
broiler and cook until golden brown, about 2 minutes. Place chicken on a
serving platter. Garnish with lemon wedges and rosemary sprigs.