Sure, there are plenty of places where you Walk up to order and pay and then walk up to get your food, and tipping norms seem super different there, I would assume because it seems a lot less like you are being directly served. If we are running with my model, the idea would be like they are manufacturing your food and you are buying it, rather than someone coming and serving you at your table.

If you are in the South bay, try dish n dash for super good food sold in that style.

To be clear, I am not super clear on tipping norms in that case, but observationaly, most people seem to tip a lot less, and some people just tip the change.