So I obviously do not have any non mahram in my social media accounts . But my husband has female followers of him and he uploads his pics regularly. And I'm really worried about it. Is it permissible for him to do so ?

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

As far as we know, there is no Sharee'ah impediment that prevents men from posting their photos on their social media accounts as long as those photos are free from Sharee'ah prohibitions. However, if you mean that women would look at his photos posted on his accounts, then our view is that it is allowed for women to look at men’s faces if these conditions are met: absence of lust and temptation. Besides, as far as your question is concerned, it is the women who should prevent themselves from looking at these photos.

Allah knows best.