So what is your recommendation? Is it dangerously low? How would you suggest supplementing it?
Dangerous? No, probably not. Just the birds won't develop to their full potential. Lower rate of lay, lower viability of offspring, greater vulnerability to disease, longer molts.
Met levels are hard to substitute, particularly if you are sticking with Organic. Good Met sources are animal proteins - fish, crab, insect, porcine blood meals, etc. Also soy meal - about the only common, great, and relatively inexpensive, Met source in the plant world.
I look for Met levels of at least 0.35% for growing birds, higher if I can (and do) get it. 0.30% is generally considered the minimum recommend for adult layers. I also like 0.7+ for Lysine levels, though 0.6 meets minimum recommends for adult layers. Growing meat birds needs are of course higher than growing DB bird needs, which are greater than growing egg layer needs. And growing birds need more nutritonally dense protein feed than adults.
If we knew where the OP was, we might be able to make some alternative recommends based on what's on local shelves. Almost always easier to buy a better feed than it is to try and fix a sub par one. Usually cheaper, too.