Pam's Lemon Pepper Chicken Sandwich

1 lb. boneless chicken breasts
Pound or roll with rolling pin to 1/4 "
Marinade:
1 cup orange juice
1/3 cup lemon juice
1/4 cup oil
2 t. sugar
1 1/2 t. lemon pepper
Marinade chicken 4 to 6 hrs. Grill on grill. After cooked add tomato slice,
avacado slice, Monterey Jack cheese

Grill until cheese melts. Put on toasted sour dough French Bread.