This. Ignore the windows. Look up, just under the roof. See all that open space? That's ventilation, and tons more than those little windows provide. This roof will not have condensation on it. If it does, that defies my 40+ years experience dealing with metal roofed buildings in a humid climate. See how the little ridges between the roofing and the roof boards haven't been filled in at the ends? Perfect! If that roof has condensation on it, someone is spraying it with a hose.
A metal roofed building needs ventilation not from some windows or a door, but right up at the roof level itself. Just like in that picture. If you've sealed it off all under there then you'll get moisture. I'm aware that warm air meeting cold metal creates condensation but with good air flow, it dries quickly enough that you never notice any.
And if the top of the coop area below the roof is covered, as I suspect it is, you need vents in the top covering.
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