Chicken legs are also often priced under 99 cents a pound, even in the Bay Area.
Likewise, real free range chickens have really deep flavor in comparison.
When I say real, I don't mean a chicken that has pasture time but eats the same vegetarian feed as other factory farm chickens. They need to eat insects, get exercise, etc.
For example, you can make a giant pot of lentil soup that will have 10 servings for maybe $4 worth of ingredients. And it's healthy.
Split pea soup is another good one.
Two kilograms (4.4 lbs) of Lentils costs me $2.49 at my local supermarket. According to the fine people at Wolfram Alpha, 1 cup of lentils (cooked) weighs 99grams and costs $0.125. Bags of frozen vegetables cost ~$2. I can get ~8 meals from one bag of such veggies, making each portion cost $0.25. That's a total cost of $0.374, which means we still have ~$0.12 to go.
One package of dried soup (with beans) costs $1.99 regular price - but can be on sale for $0.99. Taking the regular price into count, and getting 12 (small) bowls of soup brings the per-bowl price to $0.125.
So, you can eat (unfortunately, high salt) soup, beans, lentils, and veggies for ~$0.49/meal. You'll actually need less than a cup of lentils if you do this, which should bring the cost down a bit.
You found pricy ramen, by the way. The ramen I get (Maruchan, I think) is ~$0.20 per package, which has ~380 calories.
Your meal seems to be about 150 calories by my extremely rough estimation.
But humans can survive on ~1200 calories. It's just not awesome.
With this you can make tons of beans in bulk, freeze them and defrost as necessary. I would serve the beans with fresh rice. The base for most of my beans (about 12 quarts) was a pint of bacon fat and like 3-4 full sized onions and a bunch of garlic.
I got my meals down to about 50 cents each. You can get beans in bulk (25lb bags) from hispanic markets.
Lentils with a mirepoix base are another great option.
My go to for a cheap filling meal has always been a stew or soup. Bulk quantity canned tomatoes, beans or rice, some protein, onions, carrots, and a ton of herbs means a single pot meal that can last for a long time - especially in the freezer.
Tomato and peppers, for example, are both very easy to grow. There are also spices that grow like weeds. All of these can be added to your ramen bowl. :)
This would take months to set up.
Be sure to pierce it to let steam escape.
They can cook a bit unevenly. Letting it rest for a few minutes afterward can allow it to finish cooking and "even out".