AITA for telling my friends I will unfriend the next friend who calls me fat or chubby ?

Unfortunately, the drama didn't end when I (20f) dumped my boyfriend (20m). My friends keep bringing up the fact that I didn't like it when my then boyfriend called me fat in a positive way.

Today I'm 151 lb at 5 ' 8. My friends are questioning why I'm so hell bent on nobody calling me fat. They, especially my friend "Lisa" (20f), said I'm chubby. I'm sick of people and their comments about my body. I told them I will unfriend the next friend who calls me fat or chubby. It sounds extreme but that's just how pissed I am. Am I the asshole ?