To grow chiles so you need to first of all chilli seeds!
Chilli seeds I buy from different vendors as well as take from your own fruits. Do you take seed from own fruits that are not isolated so one can get hybrids but so far it has been good! I insulate even some plants so I can be sure that everything is ok. I change even seeds with different people from both Sweden and abroad.
Here are some of the seed suppliers who I think is easy to shop from online.
La Palma Canary Islands Spain