capsicum (Capsicum annuum, esp. the cultivated chili peppers); chili pepper (chile, chilli); cayenne; red pepper
shichimi pepper
唐辛子を使った料理を楽しむ。
I enjoy dishes made with chili peppers.
唐辛子を入れすぎて、食べられません。
I put in too much chili pepper and can't eat it.
唐辛子が苦手なので少なくしてください。
I'm not good with chili peppers, so please use less.