Article from The Hustle on the art and science of restaurant menus. Quote:

Say you unfold a two-page menu. Your eyes will almost always follow the same reverse “Z” pattern: Top right, top left, bottom right, bottom left.
One-page menus are different; most people’s eyes land about ⅓ of the way down from the top, then move up, then scroll back all the way down.
The prime real estate of a menu — that upper-right corner — is often reserved for high-margin dishes or supplemental items like appetizers.