This is either going to end up dominating the food delivery business (unlikely, but possible) or present yet another case study in Silicon Valley delusions.
It's entirely possible, easy even, to automate the pizza making process. You can go to the grocery store and purchase frozen pizzas which have never been touched by human hands. Exactly none of them are made by industrial robots. Industrial robots cost more than a pizza assembly line does, and they don't do anything that the line can't do. The only way this could make sense is if they could get them robots to make lots of other things, but, well "best of luck with that." At $18 for a pizza, they obviously aren't saving enough money on labor to pass this on to consumers.