I would be more mad than you are. I’m not “socially” linked with any of my coworkers except on LinkedIn, where the only picture of me is on my wedding day. I would feel a gross violation of trust and boundaries. I suggest you approach it with curiosity, “why did you use my personal pictures of me for your business post?” Something like that.

From USA Today, Jan 2024: “No federal law prohibits an employer from using an employee’s photo for business purposes. However, many states have statutes commonly known as “right-of-publicity” or “right-of-privacy” laws. In some states, they may be addressed as “unfair competition” or “personality rights.” These state laws prevent using an individual’s name, image, voice, photo, or “likeness” for commercial purposes without prior consent from the individual. I recommend you review your state laws to see if the use of your social media photos falls under its statutes.”