Agreed. Normally I'd just suggest making the whole thing a coop, but the run portion isn't tall enough to be used like that here.Those are going to be harder to renovate than the model in the above-linked thread since the runs don't have a roof.What's your level of handyman skills and tool ownership? I can make some recommendations but some are easier and some are harder.
I was thinking you could just attach the 2 (I assume you have 2, unless these aren't photos of the actual one you own) back to back to make 1 bigger coop, but I'm not sure if the combined space is big enough either.
Adding on to the top of the run (so that it could be used as a coop) would be an option, but I don't know if it's really worth doing due to cost of materials (and possibly tools)?