@Goldie I had to look up "socca" 'cause I never heard of it before. Interesting. I wouldn't have thought you could make flour out of <del>chickpeas</del> garbanzo beans. I'd expect mush, not flour, though one could dry them before grinding, of course.
BTW, I always feel like I should write "chickpea" in some really narrow font, and "garbanzo" in something wide and florid. I just love the word "garbanzo"---I usually pronounce it in a big, rolling voice. P.T.Bridgeport is what I'm aiming for.
As 'gram flour' chickpea flour shows up a lot in Indian cooking.
Peas in bread also show up in medieval horsebread. There's a whole article about it here - https://www.researchgate.net/publication/250977320_English_Horse-bread_15901800 - which I hope is publically available. And it cites a 14th century London ordinance to the bakers - no “horse-bread be made except of pure beans
and peas, without mixture of other grains or bran”
Sure - I guess you mean in addition to gram/chickpea flour;-) Pea protein shows up in a vegan foods. 'Huel' uses it a lot, I think.
A quick search shows both green and yellow pea flour to be pretty widely available. Ditto bean flour in a number of varieties. Fava bean flour sounds like it would work reasonably well.
Medievalists and Medieval-adjacent. Sort-of.