I don't see anything particularly concerning about the tooth profiles.
The short tooth in the middle of the 2nd photo is right next to a shifting ramp, and was there from the factory.

As you pedal, the chain pulls to the right end of the channel, or the left side of the tooth (from the view of the photos). Any rounding to the back side of the teeth (right side of the tooth, left of channel) would be by design and not affect your riding.