Clean Boneless Chicken Breasts thoroughly. In a glass dish, combine marinade ingredients. Add chicken to this mixture and refrigerate 4-6 hours, turning several times.
Grill over medium coals for approximately 35-45 minutes.
Remove Boneless Boneless Chicken Breasts from heat and allow to cool. Skin and debone the breasts, then coarsely chop the meat. In a bowl combine chopped chicken, celery, mayonnaise and lemon pepper. Serve on lettuce with sliced tomatoes