i just came back from Oahu, mostly in the Honolulu area and i searched up and down for peppers, in grocery stores all i could find were orange habs, fresno, anaheim and thai(that included their markets).
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i didn't venture into a nursery as i didn't have travel means but i did walk the side streets looking at peoples yards and didn't see any kind of peppers growing..
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found 1 guy, who has a friend that is growing orange habs and bhut jolokia(ghost peppers) but that was it. i asked what appeared to be locals and no one i met ever heard of local Hawaiian style peppers, now it could be that many were not originally from the island.