Should I be worried?

[Bogertophis]

...Should I call the vet at this point? Am I overreacting?

No* & Yes. And raise the humidity- a dented eye DOES mean he's dehydrated, and he CANNOT shed when dehydrated- so ignoring this is not helping, is it? Get his humidity up to 65%-75% for a while- until his eye improves. Humidity is more than just filling his bowl of water. And meanwhile, he may also shed.

And try this on yourself, since you don't seem convinced: Eat a meal with lower fat content, & time how long before you're hungry. Then eat a meal with a very HIGH fat content, & see just how long you feel full. Then remember that snakes don't eat as often as we do, but it's the same idea, & when they feel a shed coming, they just do not eat.

*I don't personally care if you want to call the vet- but until you fix husbandry issues (humidity) I just don't see the point. And you said it yourself, his body weight is good & he's not lethargic. With snakes, you have to pay attention to what's right in front of you: his dented eye.

Just a reminder, the reason snakes need good hydration to shed is because to facilitate the shed, their bodies secrete moisture (aka water) between the layers of old & new skin, so it comes off easily. That's also why their sheds feel moist when you find them right away, before they dry out.