Hello FBA!
Before I post my twofers, my opinion on food and heat in the coop :
We began with a big feeder and water that stayed in the coop. We changed for two reasons : mice invasion (which was solved when we got our cats).but also because it means the hens stayed in the coop much more, and they pooped inside. Now, I have several small feeders that I usually put outside when the weather's nice but move back in the coop and run if the chickens have to stay inside.
I am careful to put my feeders outside in covered locations so that the chickens don't make an obvious target from the sky when eating.
Regarding artificial heat in the coop, I disapprove strongly of it
for healthy chickens unless we are talking about temperature under -5c inside the coop. The reasons why are that if you artificially warm the coop, you increase quite a bit the temperature difference between inside and outside, and I think that is a worse problem for the chickens when they will go out than faring with low temperatures in the coop. And also, you decrease their natural ability to withstand cold. I think creating a small space inside if the coop is too big is a much better solution than heating.
I would however not apply this reasoning to unwell chickens, older or very young chickens, and breeds that are especially fragile.
About umbrellas,

although my first picture was a set up, I actually have a permanent umbrella in my chicken zone that is lined with chicken nettings. I use it to make a shady corner that's sheltered from sky predators and stays more or less dry when it rains.