A food that can made in bulk, that has healthy proteins and lots of veggies and fiber is four bean chili. The down side is that it is labor-intensive, but frankly being healthy requires a lot of labor between exercise and eating healthy. It IS a labor of love, though; love for your well-being.
You can buy canned beans (a can of beans is usually less than a dollar in most places) or you can buy dry beans and soak them.
I use 2 cups of dry beans, 1/2 cup each for four different varieties (black, navy, kidney, red, pinto, etc.). Soak them in 10 cups of cold water overnight on the counter-top. Drain, rinse, and refill the water for another night.
In a large pot, saute 1/2 a chopped onion, 2 chopped cloves of garlic, and 1 chopped green bell pepper in olive oil if possible, but any vegetable oil can be used. Add ground cumin (this can be bought in bulk and it takes about a tablespoon), 2 large cans (16oz?) of crushed tomatoes, and the drained and rinsed beans. Stir thoroughly and bring to a simmer. Cover and simmer for about four hours, stirring every 20-30 minutes. Let it cool and you can freeze it in pint or cup Mason jars with plastic or metal lids and then you can move them to the refrigerator for a portable microwaveable meal (minus the lid). I can usually make enough for a dozen meals this way.
You can also make bulk chicken vegetable soup and freeze in jars. Start slowly and collect the non-perishable goods as you are able, then gather the fresh/frozen (veggies) ingredients right when you plan to cook. The overall cost will be less and it will provide you with storable nutritious meals for when money runs short.
I hope this helps.
April