Thank you for the advice. Cluck is back to runny poop, twice yesterday then normal ish looking poop last night. I wonder if it was a strip of toweling. I removed the paper toweling yesterday and used the kraft paper as that's what I had on hand. They are all acting fine, so thank goodness for that I suppose. I really do wonder if I got a bad batch from MPC as Isabel was fine then just randomly croaked and then Cluck and Henrietta both got pasty butt, and I know that I am doing everything allegedly right. lol
Their coop isn't quite ready yet, as from all the reading I was doing, it said fully feathered to go outside, and so I figured I had a few weeks to complete, since they're just starting to get their feathers. They are 12 days old and it's still in the 30s and 40s here too, 50s in day time. What I can do, is increase their space by double at least. I will try this and the pine shavings too, having the rubber matting stuff as back up in case they start to eat the shavings.
Ideally, I'd like to put them outside, but we have so many predators here, and my coop/run isn't quite secure enough. We are working on it. For the run, we have a cedar privacy fence with a trench dug all along it, with huge rocks and gravel buried underneath it. Then on the backside of that, we have regular wire fencing (the redhead stuff from Lowe's), which the bottom is partially buried in case something tries to dig out or in. Then, on top of that all along the bottom, we've run 1/2" hardware cloth for security. We're nearly done with the fencing, should be done today probably. (if it quits pouring the rain down-no garage and don't wish to operate electric saws in the rain, lol) As far as the coop, everything is done but for a little painting, and finishing the bottom wall. Hoping to get that done today as well. Then I wanted to water proof it wall with some Thompson's water seal-maybe a couple coats as I figure it will need it/take a beating from all that poop etc. I figured on allowing a week for it to air out/not smell like water seal/paint etc. Hopefully that sounds like a viable plan.
I am a total chicken noob and just want to ensure they will stay safe in their coop and run. Oh, and in the meantime of all this, I have to build a frame and order netting for over the top of their run. The eagles and ravens here are relentless, then there are coyotes and foxes that worry me too. Not too worried about the lynx and wolves, haven't seen many though I am certain they are around. I saw three lynx last year, all together, when I was returning from taking my kid to school. I've only seen them that once, but obviously they are roaming around here. We already have a stinkin Raven stalking the coop area-I'm sure he knows what we are building.

Bears do worry me, but there's not alot I can do about that. Can't convince the hubby to run electric around it all yet. He says, "They're just chickens and we've already spent too much." Grr, that man!! Coyotes have stalked my rabbit, but haven't tried too hard to get into his cage, so… Chickens might be a little more tempting. To top all that off, some stupid dogs have started coming around, so I am hoping to not have to get nasty with them, but am prepared to, nonetheless. And in addition to the three layers of fencing, partially buried fencing, rocks and gravel, I have also made two bear silhouettes to hopefully scare the dogs away or maybe detract a predator who might come sniffing around and get surprised by the shadow bear. Yeah, I know, I am probably just making myself feel better, but we have sooo many predators here that I worry endlessly.
If you've read the book I've just written, bless your heart and thank you from the bottom of mine!!