I'm not an offensive line expert and don't claim to be. When a Chiefs linemen gets beat, I know enough to say that's bad. When they block their guy, I know enough to say that's good.
That said, Pro Football Focus ranked every offensive line in the NFL through the first half of the season and concluded that the Chiefs offensive line ranks 22nd in the NFL. Without having watched all the other offensive lines, that feels about right I suppose.
The Chiefs are an awful pass blocking team, ranking 31st in the league in pass blocking according to PFF. The Chiefs gave up three sacks last week and I thought it was a pretty good performance, which tells you where the bar has been set. The pass blocker struggling the most (Jah Reid) had one of the hardest jobs coming to the team the week before the season and then having to start.
The Chiefs are a pretty good run blocking team, ranking seventh in the NFL according to PFF. This matches up with what I would have guessed. Jamaal Charles makes any line look good but Charcandrick West has played well since Jamaal's injury. Perhaps West's success isn't a coincidence because the Chiefs best run blocker Jeff Allen just started playing two weeks ago.
These rankings will change as the season goes on. As we learned with Eric Fisher, players are allowed to improve and get better as the season goes on. I would expect that to happen with the Chiefs line as we go here, especially since they won't face five top 10 defenses (Denver, Minnesota, Pittsburgh, Cincinnati and Green Bay) like they did in the first half of the season.