I don't think Chili's is going to automate bringing the food to you any time soon, but they're probably considering putting kiosk tablets to order drinks and pay to save a few trips (I haven't been to a Chili's in a while, but these things are invading most of the chains I frequent).

McDonald's now has automated drink machines, mobile ordering and in select locations kiosk ordering (on giant touch screens). They've also experimented with call center handling of drive through ordering, so could be ready to potentially hand that over to voice recognition as well.

I think it's a long time before food service jobs are all automated away, but some of the jobs are going away. (McDonald's claims they plan to keep the same number of employees, and shift to provide more service in the seating area)