If meal is sent back because it is improperly prepared, unappetizing or unsatisfactory in any manner then there shouldn't be a charge. But if the meal is consumed and the diner demands another for no apparent reason other than to fill their face then perhaps a charge is in order.

On a cruise (not HAL) we were seated in the MDR with a couple of substantial girth who on the first night ordered three entrees apiece, polished them off and proceeded to order multiple desserts. We arranged to be moved to another table for the rest of the cruise.