&pizza's loyalty program highlights creatively twisted versions of dead presidents, including Abraham Lincoln with a purple mohawk.

Whataubrger was among chains with a particularly strong increase in foot traffic, due in part to menus including larger orders to create shareable meals.

"Actual surge pricing doesn't make economic sense. You can't increase the price so that there's more chicken wings," says Thanx president.

"From our early adoption of TikTok to our in-house development of various digital platforms, technology has been at the core of our operations," says Crumbl's Beth Baty.