As long as the pizzas are identical and are baked on the same shelf, this is no problem.
If two different pizzas are baked next to each other, cooking quality can be affected because pizzas with different toppings brown at different rates.

As long as the pizzas are identical and are baked on the same shelf, this is no problem.
If two different pizzas are baked next to each other, cooking quality can be affected because pizzas with different toppings brown at different rates.