On a recent trip to Roswell, I stumbled on Il Forno. It's on Roswell Road just south of I-285.
I don't think they have a wood-fired oven, but I really enjoyed their pizza, which was prepared in a very classic style. I had the Margherita, which is tomato sauce, cheese, basil, and garlic. The first thing that struck me was the crust, which had a wonderful bready taste. It's all too easy to get the cardboard effect in pizza places, but this classified as really good bread. The sauce and cheese were excellent. I found the basil and garlic notes to be just right---very noticeable and pleasant, not too much. I ate the whole pizza, which may not have been so great for my diet but was certainly a treat.