It's best to take him to the vet to get checked out as the heat from the chillis will have stimulated the over-production of enzymes in his stomach which could affect his digestive system, as well as possibly burning the lining of his stomach as well.
My rabbit ate a load of chilli's last night because he escaped from his cage .... He ate the full plant of about 20 chilli's .... Will he be alive when i check him in the morning and if he is still up and running, will it have done him any damage?
It might burn through his stomach wall! Be careful, you should take him to the vet immediatly! If he seems fine now, you are LUCKY is his poop normal( gross question I know)? You should still take him to the vet. I have two bunnies:)