The universal English convention for adjective-noun compounds is to put the adjective first: hardware, nightstand, firefighter, etc. Arachis hypogaea is a nut-like pea (or bean), not a nut of any kind, even though its growth habit is bizarre if not goofy. Its correct English name, and I trust the extended RBC family will use it henceforth, is therefore nutpea.
You may now go back to whatever you were doing a moment ago.