You say they were locked in the coop all winter - and by that do you mean the actual coop (indoor space), or do they have a run as well? If they were in an actual indoor coop, especially one not large enough (17 chickens is a lot of chickens), then no wonder they look like shit. But that does not mean that chickens that don't free range look like shit. Not in the slightest. It's quite possible to have chickens who never free range and still have great lives and look healthy, sunbathe, dust-bathe and so on. Mine are like that. I have several generations that have never free ranged in their lives, and they look great. I don't believe that risking their lives just for the idea of free ranging is the better choice, and I don't want to just get used to them dying. I'm not putting all this money and labor into them just to watch them plucked off one by one. Also, I have kids who love the chickens, and I want to teach them responsible animal ownership. Protecting your animals from predation is part of that lesson (the "cycle of life" lesson is one for a different time - applied to wildlife eating other wildlife, not wildlife eating my pets).
So, if you don't have the financial or practical means to provide an enclosed run big enough for 17 chickens, but you still want to keep them safe, you'll have to tweak the parameters. Reduce the flock down to a smaller number that's more manageable, and get rid of the roosters. A small handful of hens are much more manageable. Give them a nice protected run (10 sq.ft. per hen) and furnish it with enrichment items - perches, dust bath, logs, chairs, pallets, etc. They'll be perfectly happy in there, and they'll be alive. Don't let the free range movement guilt you into thinking they are "locked up" or "prisoners". No they are not. Hens in battery cages are prisoners. Hens in spacious, enriched runs are pets that are being responsibly taken care of.