Hi there, my brother and I actually got a panther from the same breeder! Will from global geckos in surrey. We bought a male from him in April this year which turned out to be a female, we suspected it after a while, here are pictures:
https://www.chameleonforums.com/please-help-sex-my-panther-69364/
But then we spoke to him and changed him for a male. We got attached but we really wanted a male panther chameleon and here he is. Looks very similar to yours and he's a 6 month old ankify x red bar ambolibe. That picture of him shedding was only yesterday!