While the sign is nice, I REALLY like the slide bolt latch! Also, it is interesting use of diagonal bias on the door to prevent it from drooping in the future, GOOD JOB! I like the use of the weathered barn wood and the bat and board siding. It is simple but very effective. Also good use of roof overhangs to protect the openings (windows, doors and nest box access). So many people cut corners and don't provide suitable overhangs like you've done. I'd be interested to see a close-up of the pop door. I can almost make it out in one of the photos. At some point you may want to fortify the run a bit, but if the ladies stay in the coop each night that won't be all that important of an upgrade.
Please give my compliments to your DH! He done good!