Eggs. You can feed the beans, rice, lentils, and quinoa too - best they are soaked and cooked first. Avoid the bananas, apples, spinach - or keep the quantities very small. Basically, don't count on those as part of the "diet".
Eggs are one per five birds,
we did the math. Briefly, you can increase that amount without concern
You can't possibly hit your protein targets with the rest, even if you go very heavy on the beans, something you don't want to do. Oatmeal has a ton of beta glucans - good for humans, bad for chickens. Not more than 20%. Rice is similar to corn - its energy but not a great source of anything else.
Understanding that this is NOT a balanced diet, just to make it thru - I'd go (dry weight) 2 parts black beans, 2 parts lentils, 1 part oatmeal, 4 parts rice. 1LB of each. Mix to combine.
Divide into four parts, one for each of the next 4 days/ Add twice that volume of water, and cook till the rice is done. (add to boiling water, put a lid on it, reduce to bare simmer, wait 25 minutes.) Pull it off the heat, crack between 2 and 4 eggs in it - your own birds eggs are fine, you can even include the shell!
Toss/mix/whatever to set the eggs, then serve it to your 9 birds as their ration for that day.
Save the quinoa for yourself - not that its not a useful part of the bird's diet, but its expensive, and you can do w/o.
Again, this is NOT a complete diet. But its not horrid. With the ingredients you've listed, its what I'd do.