In reviewing your attached material I'd venture a guess and say that pizza might not be permitted. However it should be very easy to get a final word on this, just contact the authorities and ask them about how they view pizza. While a plain cheese pizza is one thing that they might allow without refrigeration one with meat and or vegetable toppings is yet another. If you were to have an oven in which you would heat the pizza slice to a temperature above 160F (minimum temperature for a "kill" step) this might influence their opinion in a positive way for you.
Tom Lehmann/The Dough Doctor