In a large bowl, combine the chicken, basil, Parmesan, breadcrumbs and salt. Divide meat mixture and shape into 4 patties.
Oil grates and then turn grill on medium heat. Cook for 7-10 minutes. Flip burgers and cook and additional 5-7 minutes or until done. Top with mozzarella cheese and cook for 1-2 minutes or until cheese is melted.
Transfer burgers to buns and top with marinara sauce and fresh basil leaves.