A customer wanting pizza searches with intent and locality: "pizza near me", "pizza delivery near me", "best pizza near me", "pizza open now". SEO for pizzerias puts you at the top of those searches — from people ready to order right now. Miss them and they order from the chain, or the app, that showed up first.
For a pizzeria, SEO is almost entirely local SEO. People order from nearby: they pick from the map pack. That Google entry of yours, its reviews and a menu they can see are what decide the order — and they're exactly what we work on.
Ranking your own site matters more for pizza than almost anything, because the alternative is the delivery apps that take a third of every order and own your customer. When people find and order from you directly, you keep the margin and the relationship — SEO is how they find you.
Delivery searches are settled by the platforms and pickup searches are not. A page for collection, with the real wait at eight on a Friday, wins the orders that keep the whole margin.