Blueberrychickens and Lrkel -- sounds like that chick is "stargazing", it's a condition usually caused by a lack of Thiamine (B1) in the parents' diet. I can't provide dosage amounts but we corrected it by IMMEDIATELY giving the affected chick Vitamin B1, Vitamin E and very very small amounts of Selenium. We gave it to the chick twice orally (crushed pills and mixed a little with water, gave it by dropper) and then put the same vitamin mix in the water for a week.
The condition can also be genetic, esp. in Silkies.
Our stargazer chick will be 1 year in August. She never had another episode (looking up and flipping over) since Day 2. Act fast, and you might be able to correct this imbalance in her system. After one week, I'd put the usual vitamin/electrolyte mix in their water to make sure she's getting enough vitamins.
Going forward, DO NOT feed her medicated food. It contains Amprolium is a Thiamine blocker which prevents the chick from absorbing Vitamin B1 which cocci needs to thrive.