It's not normal, but he is showing signs of stress you don't recognize. OTOH, you might be lucky. It's hard to tell. Over the next 12 months his personality will change, but not necessarily in a bad way. You will have to adapt to his changing persona.
For any iguana, closing one eye is a way to limit his experience with you. Head petting makes many iguanas close both eyes to reduce their experience.
When his sense of territory develops, he is likely to avoid your hand in his space by running, biting, and tail whipping. The way to deal with that is to not let him dictate to you how you should behave. Rather, reach in and grab him as quickly as possible. Then sit with him quietly.
Hand feeding often leads to the problem of him not getting enough nutrition. Iguanas are designed to eat large volumes of low nutrient foods. There have been lots of examples here of iguanas of all ages who couldn't break the hand-feeding habit. They can eat a lot more when they feed off of a pile of dripping-wet food on a plate. You should stop hand feeding his staple foods, and find treats that he really loves. Then feed small bits of treats whenever you two interact so he can associate you with something good. Try bits of banana, apple, pizza crust, grape, and more. Keep it up until he shows interest in a specific treat. For now,, stick the treat on a toothpick and hold it next to his nose, and gently wipe the treat across his snout (if he doesn't show he hates it) so when he tongue flicks, he can taste it. He needs time to catch on to the situation.
I hope he is one of the lucky iguanas who never get resistive and tough, needing systematic taming. stay in touch, OK? :-)