Jalapeno Grilled Chicken Sandwiches

1/4 cup jalapeno jelly
4 boneless skinless chicken breasts
1/4 cup apple cider vinegar
1/2 teaspoon salt
1/2 teaspoon Tabasco sauce
4 hamburger buns

Melt jelly in microwave-safe bowl, stir; add apple cider vinegar, salt and Tabasco sauce. Heat one minute on HIGH; stir well. Grill or broil chicken breasts 5 to 6 minutes per side, basting often with jelly and vinegar mixture.

Serve on buns with lettuce and tomato garnish.