Yes, it appears it's a respiratory infection or at the very least, an eye infection. The easiest way to treat it is to flush the eye with saline eye wash and put Neosporin in the eye twice a day until it clears up.
If the symptoms get worse, though, you will need to treat the chicken with an antibiotic called Tylan 50. You should be able to get it online. It's an injectible med, but most often we give it orally at .1ml per pound of body weight, twice a day for five days.