Several months ago, I asked for help picking a spot in Harvard Square. I took one of those recommendations recently (on another trip--I don't plan that far in advance!) and tried Cambridge One.
The place looks like Audubon (I think I read they have the same owners?), which is a good start for me. We shared two half pizzas--one with sorrel and chevre (ok--I was expecting dressed greens with the goat cheese but it was sort of dry. Still good, but I wouldn't get it again) and one with chicken, red peppers, and I think mozzerella & parmesan. It had a little kick and was very tasty (I had chosen the sorrel and chevre half--I hate being out-ordered ;) ). It's definitely knife-and-fork pizza. We had a couple of glasses of $6 Chianti, which were fine for the occasion (i.e. no occasion whatsoever).
I never found a menu online, but (for the uninitiated) it's a dozen pizzas and maybe half a dozen salads. The pizzas are available half or whole--I believe the whole pizzas were $12-15.
Overall a good, inexpensive dinner. Thanks for the recommendation.