Unpopular dish

There’s a dish at my restaurant that people rarely order, and when they do, it gets sent back about 95% of the time (in my experience). It is bland and just not good.

Last night a customer ordered it and shockingly, they sent it back. I knew they weren’t going to like it but I was busy and bit my tongue. When you have customers order a dish like this, do you tell them not to get it or to get something else? How do you word it?