Moe’s, Papa John’s, Chipolte come to mind. Some sit-down restaurants are replacing waiters per se with tablets. Plenty of others, just not pervasive yet.
I haven't experienced that yet, and we tend to eat our 4 or 5 times per week (but almost never fast food places). My experience is mostly centered in Southern Florida and Los Angeles, so perhaps it's taking root elsewhere and I'm not aware of it yet.