Your last photo isn't angled to show the limit of contact with the bottom run of the left dropout's flat surfaces. It may be fine unless the actual gripping surfaces of the axle locknut are running off of the forward edge of the lower half of the dropout.

Remember that the axle gripping surface contact between the axle locknut and the dropout is much more critical than is the gripping surface of the head of the QR lever, since there is free-play between the axle and the QR mechanism.
Remember also that the loadings that might cause an axle end to slip along the dropout tend to be much more critical on the drive side of the axle.

It would be useful at this point to observe and possibly photograph the dropout/axle engagement from below and forward of the dropout. Good photos so far otherwise!

Is your bike one of the Austrian-built bikes? Mine has a very different-looking dropout attachment to the stays (appears to be welded), and btw I was able to use the PC950 model chain (even narrower) on the old Agrati-pattern chainrings.