The knock on Chandler has been his run blocking.
However, that being said, he finished the preseason playing 55 snaps against Pittsburgh at LT and preserved his 100% pass blocking efficiency, has only committed 1 penalty in all 4 games combined, and graded at +2.0 overall with a +1.5 in pass blocking and even a +0.1 in run blocking in the final game. He has given up no QB hurries, hits, or sacks in 127 total snaps.
Granted, he still has a long way to go but his overall performance has been highly encouraging.