That's the same way I felt. When I noticed it becoming a trend, I brought my concerns to my boss who pretty much waved it off. I said that I was certain in a few months, one or both of those students would suddenly change pronouns and that if this were a straight male teacher, he'd be under suspicion and questioned about his intent and she waved that comment off as well.

A month later, before class began, my student approached me and asked if I would use they/them pronouns for her from now on except in front of her parents. I wanted to scream and my body was shaking with anger. I emailed my boss about it immediately. During my weekly meeting with my boss later that day, I told her I said this would happen and I was not comfortable with this, especially with the part where we keep the information from her parents especially considering Rapid Onset Gender Dysphoria in young girls and the higher rates of suicide. My boss spoke to our Head of School and it was determined we can't "out" students. I was livid and for the rest of the year, including on her report cards, I referred to her by name only. Shortly after this, the second student that always ate lunch with him also started going by they/them pronouns. By the end of the year, both girls told their parents about their pronouns and everything was just wonderful apparently. That's the cost of living in an ultra woke liberal city, I guess.

At the end of the year, I was assigned to do the first girl's graduation speech and that teacher had the audacity to write me an email saying the student was worried that whoever was assigned to her wouldn't use the correct pronouns and to please use they/them. I told him I would be going pronoun free in my student speeches and I did just that. I hope someday she realizes she was groomed, she's a girl/woman, and that this was wrong.