Disclaimer: I don't know how good jalapenos are for macaws, or any other bird specifically. What I do know is that birds seem to lack the capsaicin receptor; birds which eat peppers will happily consume habaneros or scotch bonnets with no ill effects.
yes but it may die
You can eat it but the one that you should eat is the naga jolokia which is very similar to jalapenos.
no
No Aztecs never ate Jalapenos, they were never part of their diet.
Usually you just eat them.
if he can get to it he will
Scarlett macaws eats fruits, nuts, flowers and nectar.
no
Food.
No, they eat seeds
toucans and macaws both eat fruits, nuts, seeds, insects, and small creatures
Hyacinth macaws eat mostly palm nuts. They live in the scrub lands of the rainforests where cattle eat palm nuts and partially digest them making it easier for the macaws. In captivity they also eat fruit and vegetables.
Macaws eat large nuts such as the macodamain nut also many fruits.