Garlic Lime Chicken

1/3 C soy sauce
1/4 C fresh lime juice
1 Tbl Worcestershire sauce
1/2 tsp mustard
2 garlic cloves, minced
6 boneless skinless chicken breast halves
1/2 tsp pepper

In a large resealable plastic bag, combine the first five ingredients. Add the chicken; seal bag and turn to coat. Refrigerate for at least 30 minutes. Drain chicken and discard marinade. Sprinkle with pepper. Grill chicken, covered, over medium heat for 4-7 minutes on each side or until juices run clear.