If the following is to be believed the Jets have been running a ZBS all year and are currently the number one ranked offense doing so, in a division with the Patriots who traditionally run the 3-4, and the Dolphins who also run the 3-4.
It wasn't always easy. In training camp, the Jets' coaching staff installed a zone-blocking scheme that was largely unfamiliar to the offensive linemen and most of the running backs, and it took a little while for them to get used to it. Richardson had played in such a scheme when he was in Kansas City, so he could help in a coach-on-the-field role. But until they'd had enough reps in the new system, it wasn't going to be smooth.