Joe Mamma's is a nice little place in the Food Lion shopping center on South Tryon. I've eaten take out food from here a couple of times and eaten in as well. They tend towards the greasier/heartier fare with a focus on Northeastern street cuisine like cheese steak sandwiches, pizza, and calzones. Most recently I had a calzone and it was good. It was very cheesy, slightly greasy, and came with a side of marinara. I left satisfied!
There are also some salad and various sandwich options as well. When you come in you order at the counter and they'll call your number when the order is ready. They have a small sitting area near the front/kitchen and a more expansive dining area in an adjoining room - with booths and tables. The staff is friendly enough, though they kind of have some Jersey brusqueness to them.
Expect to pay about $10 for a meal - most of the menu items are $8 or more. With a drink it'll be more.