AITA for not wanting my husband to share the lunches that I pack for him with his female coworker

A year ago my husband (30) M, started working as a high school teacher, I was over the moon for him! So I started packing him beautiful and creative bento style lunches, which he loves! Well his coworkers (all female) naturally got jealous of his lunches, as he would show them off, and would start asking to taste the lunches I packed for him, at this point he is full on sharing his lunches with a particular coworker (27) F that never seems to have her own lunch at school…..this is a grown woman, she should be cooking for herself, instead she shows up around my husband, while eating nothing but a bag of chips so he ends up feeling bad and shares his lunch with her. I swear this woman acts like a hungry puppy dog… so annoying. I don’t even want to continue making his creative lunches if I know that he isn’t the only one eating them. Am I wrong for feeling this way?