A couple weeks late but here I am 
My suspicion is that it is just a bit of the loose skin that is typically under the scales around the eye. This happens now and again and is not really a reason to stress. Just keep an eye on it and it should tuck back in on its own
If it has not returned to normal by now, time to hit up a vet
Glad you’re back!
A lot of people tell me high humidity doesn’t actually cause RI’s I keep my humidity to 70-88% humidity. And my snake does have the white part showing too. But she’s had it for many months and she doesn’t wheeze or anything like that she’s not dehydrated or anything. Perfect sheds. I think it’s Jsut from friction.