Who on earth has ever ordered just a "large pizza for pickup"? Without specifying ingredients, type of crust, anything. This is like ordering a chair by phone from a furniture store by dialing the number, saying "Armchair for pickup" and heading on over to the store. Why reserve books online from the library? Just call them and say "10 books for pickup" and then hang up.
Me: I'd like a large plain pie for pickup.
Pizzeria: what's your name? [Name]. Okay $name, 15 to 20 minutes.
And we're done.
If you're ordering from a big 3 chain then you have to deal with a bunch of non-dedault options, but if you know what you want it can still be as easy as "I'd like a large stuffed-crust pizza with the hearty marinara". (Though plenty of people consider the big 3 to be pizza the same way that Olive Garden is Italian food... A rough facsimile, but not the real thing. I'm a little more open minded than that).
Pizzas are a lot more fungible than furniture or books.