would hunters with peanut allergy be allergic to these peanuts ?

Probably. But would a hunter keep their peanut allergy after they've awakened?

Silkworm, buckwheat, milk, and eggs are the most common allergens in Korea; so peanuts are a rare issue there. Allergies also tend to be milder, and anaphylaxis is much rarer in most countries besides those born in or raised in the US. I think the magic peanuts would actually work well there.

I love how actual statistics were placed in here for the manga and in relation to the possibilities of peanut allergies occurring !