He's about average right now with a meh type of year to me, plenty of room to grow .He needs to start making play against elite quarterbacks in critical games.
You're a pretty harsh grader if you think that Jones was "meh" this year. If he's meh, then how many DEs in the league are actually any good? 10? If you compare his career trajectory to the other pass rushers who are at the top of the league right now, he compares very favorably to most of them. Von Miller/Aldon Smith/JJ Watt types the exception, not the rule. I hoped Chandler would put himself up in that category with an elite second season, and I'm a bit disappointed that he didn't, but he wasn't that far off, either. It's hard to call his season a disappointment.
Here's a list of elite pass rushers, followed by how many years they'd been in the league before they posted a season that was comparable to Jones' second season this year:
Chris Long: fourth year (2011)
Michael Johnson: fourth year (2012)
Justin Houston: second year (2012)
Anthony Spencer: sixth year (2012)
Trent Cole: third year (2007)
Mario Williams: second year (2007)
Jared Allen: second year (2005)
Tamba Hali: fifth year (2010)
Greg Hardy: third year (2012)
Clay Matthews: second year (2012)
Robert Mathis: second year (2004)
Robert Quinn: second year (2012)
Not a comprehensive list, by any means, but it proves the point. Chandler Jones' production over his first two seasons is comparable to most of the very best pass rushers in the league. If he was 'meh', then you must have thought that Robert Quinn, Jared Allen, Clay Matthews, Mario Williams, Robert Mathis, and Justin Houston were meh after their second years too. And you must have considered Tamba Hali, Greg Hardy, Chris Long, Michael Johnson, and Trent Cole to be pretty bad after theirs.