It's quite a bit chonkier then the ones I've seen, but that's a helmeted chameleon or a triceros hoenheli if you want the fancy name.
If you just got this cham I'd recommend checking this out!
https://chameleonacademy.com/trioceros-hoehnelii/
Pretty much has all the info you need on there, but if you end up having any questions feel free to ask on here. Theres a few if us that have the same type of chameleon.
A word of warning tho, idk where you live but eye the temperature like a hawk. These guys like their temperatures cool amd since theres a heatwave rn its dangerous. My little guy actually passed away this past week because washington went from 70-80 in the day to friggin 110-120 and then my AC decdied to break over one of those nights

. So def watch your temps