"Knocked chip off one's shoulder" is a phrase used to describe the act of provoking or instigating someone, usually intentionally. There are various synonyms that can be used to convey the same meaning, such as "irritated," "annoyed," "unsettled," or "agitated."
Additionally, the term "picked a fight" could be used to describe a scenario in which someone is looking for a confrontation. Other synonyms for "knocked chip off one's shoulder" include "pushing someone's buttons," "getting under someone's skin," "rubbing someone the wrong way," and "getting a rise out of someone."
These terms are often used in a non-literary setting, such as in informal conversations, debates, and social media interactions.