The napkin dispensers don't look EXACTLY like the above
You order a cheese slice, and they don't have one
This means that they've realized that 1) they need to resort to covering their pizza with toppings because it is, at its root, horrible, and 2) nobody is ordering their cheese slices, because, as previously mentioned, they are horrible. Run. Run so fast. You are not yet weighed down by pizza, so this should be easy enough.
They don't have pizza boxes stacked up literally everywhere there is space for pizza boxes
Having pizza boxes everywhere strongly implies that people want to eat your pizza.
It has one of those stacked, possibly revolving, circular pie displays
It looks like it belongs in a 7-Eleven... yet doesn't look like it belongs in a 7-Eleven, because shouldn't 7-Eleven be more modern than that? Anyway, the point is: these slices are run through with evil.