Hi and welcome
You can get various chicken treatment products (including electrolytes, probiotics, vitamins, etc) at TSC or any other "farm store"
Is the movement of the chicks head slow or frantic/swinging wildly? Is the chick eating and drinking?
As you got the chicks from TSC you actually have Easter Eggers rather than Ameraucanas -- unfortunately it is common for hatcheries to sell them under the incorrect name, and the retailer just goes by what they are told, so it's a common thing to have happen. EE are a mixed breed chicken that has either Araucana or Ameraucana as part of that mix so that they *may* have the blue egg gene (they lay blue, green, brown or even pink tinted eggs)