Thanks for your question.

There are various insects and diseases that can affect a honey locust. One of these insects is the honey locust plant bug (Blepharidopterus chlorionis). With this insect yellowing and distortion of the leaves can occur. Fortunately a honey locust can withstand infestation by this insect and no significant harm is done.

Please take a look at the following where other insects and diseases are described that can impact honey locusts. Pay special attention to the symptoms described. After so doing please get back to me with your thoughts and opinions.

https://extension.umn.edu/yard-and-garden-insects/honeylocust-plant-bugs - :~:text=How to identify honeylocust plant,Adults have fully developed wings.

https://extension.umn.edu/yard-and-garden-insects/honeylocust-plant-bugs

https://mortonarb.org/plant-and-protect/tree-plant-care/plant-care-resources/honey-locust-plant-bug/ - :~:text=The honey-locust plant bug overwinters as an egg beneath,damage to the emerging leaves.

https://extension.colostate.edu/docs/pubs/garden/02939.pdf

https://www.uky.edu/Ag/Entomology/treepestguide/honeylocust.html

https://www.safaritree.com/blog/tree-care/locust-tree-insects-diseases/

It may be that eventually you will need to have an onsite visit and assessment by a licensed, professional arborist. Before going down that road, I would to hear from you regarding the information in the above sites.

Good luck.