Burger King: Veggie burger & onion rings
The King bestows upon all vegetarians the gift of an actually solid, complete meal comparable to that of a meat-eater dining there. For one, they actually use MorningStar patties, aka what every vegetarian awkwardly brings to a BBQ, so you know this is legit. But they also have onion rings. We know other spots have those too, but BK's are particularly tasty, and obviously taste way better when accompanied by a burger, an option seldom seen by vegetarians when it comes to fast food. And yes, we know this is technically two picks, but your Grandma told us you were looking thin.
Wendy's: Fries & a Chocolate Frosty
Contrary to popular belief, the Pythagorean theorem actually proves that it's a really bad life choice to order fries sans a Frosty on the side. Without the Frosty, we'd probably be telling you to snag a broccoli & cheese baked potato (still a good option!), but the sweet-and-salty combo of hand-cut fries dipped in a creamy, chocolatey shake is where it's at, for anyone, meat-eater or not. And yes, we know this is also technically two picks, but that's on Pythagoras, not us.