Originally Posted by cyccommute

Your chainrings aren't worn. The front derailer can't cause "chain suck". Your problem is likely due to a burr which we can't see in your picture. Burrs can happen on the first ride or the second or the 100th or... Most of the time they are caused by a bad shift. If you've ever shifted and your chain clatters rather then lifts up on the ring, that's when a burr can form. Just the action of the chain moving from on ring to another on a upshift can cause the problem.

As the chain lifts up onto or off of the rings, it can gouge an aluminum ring and leave a small raised bit of metal. Since 10 speed chains are very narrow, there isn't a lot of room and even a very small burr could cause the chain to stick on a tooth. Shift the chain off the ring and inspect each tooth for any kind of scrape marks or raised bit of aluminum. You may have to look very closely as the burr can be small.