The Zenith is one of my favorite brunch spots ever. Not only is the food fantastic, but the restaurant doubles as a unique antique shop and there are tons of things to look at. If you have no attention span, you'll definitely be a fan!
I've been going to Zenith for a few years now, and I even follow their Instagram account to peep the weekly menu. My favorites are their lentil burgers (best vegan mayo in town) and the almond pancakes. On my last visit a couple weekends ago I got almond French toast that came with some delicious, sweet blueberry syrup. The buffet is only $11.50 for tea or coffee, a buffet of cakes and different cold salads, and your choice of an entree. It's a steal for the amount of food you get. Also, who doesn't love a bar of cakes?
Zenith is in the South Side of Pittsburgh, and if you are visiting the area it's a great place to shop around after eating. The antiques here are fun to look at and you may be able to take something unique home. Even if you don't adopt the vegan or vegetarian diet you'll leave here happy and full!