I went to the Penzeys store in Santa Monica to claim my free jar. The worker at the counter told me that it contained Turkish oregano, California basil, fennel and garlic.
Their regular Pizza Seasoning is the same but it also includes Tellicherry black pepper, salt, onion, crushed red pepper and cayenne red pepper.
At least for my taste, I think that the simpler version is better. I wish they would have left out the dried basil in both of versions.