I am assuming that is a panther, right? Not the best of pictures to be able to tell. I am probably not the best to assist you since I have never bred panthers, but since nobody else it responding I'll give you my experience with several other species. At the very least it might get someone to respond if they think I am wrong. In my experience most species do not have huge differences.
Males can be very different. Some are extremely aggressive towards females, while some hardly notice them. I have always associated aggressive breeding with young inexperienced males but that might not be true. Also males that are used to females or other chameleons in there view or cage tend to be less aggressive. I don't know what the case with yours is but this is what I do.
When the females become receptive I introduce the male into her cage. This is because I feel that the male is not as aggressive if he is not in his territory. If the female is indeed receptive she will not resist him or try to fight him off anyway. If the male does not try and mate with the female immediately I sit back and watch their behavior for a while. If neither are stressed by the situation, I will house them together until they become intolerant of each other or she is clearly gravid. She usually becomes intolerant when she is gravid. A lot of people might tell you that you can never house them together but I just go off of observations. Veileds are the most aggressive species with mating that I have worked with. I have bred veileds housing them singly, I pairs, and in groups in a free range. Based on my observations I don't know which is better for the chameleons. They all worked as far as breeding is conserved. Now I always remove gravid females but that is my only strict rule. A lot of times after they have been together for a while I will stumble in on them mating but sometimes I never witness it. I try other thing to but this usually works for me. Good luck to you.
