Less government does not mean no government. You are assuming facts not in evidence...and you know what happens when you “assume,” right?
If you want more labels on your food, then only buy food with the labels you want on them. Let the food producers know. The marketplace will prevail.
Do not, though, mandate it, by law. That is tyranny. I would reckon you oppose tyranny, yes?
When it comes to government, less is better, on all levels.
The problem is we actually have regulations prohibiting the honest labeling of some foods. Such, I believe, as American-grown beef IIRC.
Pizza calorie labels are not tyranny. And they won’t make a significant difference in the cost of a pizza. But they might make a significant difference in the health of that fat client you were talking about.
“When it comes to government, less is better, on all levels.” = No government = Somali.