If you're looking for a place to get some great skewers, there really is not at the moment -- occasionally the booths at Flower & Garden and Food & Wine festival will have some, particularly at the China booth, but not like Bengal BBQ IMO.
Other than that, 'Ohana is a sit-down restaurant at the Polynesian resort offers teriyaki beef, grilled chicken, peeled shrimp that's similar the meat you'd find at Bengal BBQ. You also might enjoy the Lamb Kefta at Spice Road Table.