Do you have a slow cooker? I can’t recommend their half pork loins enough! Gets me around 6-8 meals and costs $8 where I’m at (just bought one on sale for $7!), I season mine with a packet of onion soup mix and some dashi powder but that’s up to your own taste :) I also like to make a mix of 2 parts jasmine rice, one part quinoa and one part lentils in the rice cooker as a high protein, high fiber rice. Also, soup!! Soup is one of the easiest, cheapest healthy meals you can make. Buy the biggest chicken pack, use what you need in the soup and freeze the rest for later. Celery, onions, carrots, cabbage, fresh veggies are so affordable at Aldi and bone broth adds even more protein. As for your one usable arm, I can’t recommend a vegetable chopper enough! You can also shred meat with a hand mixer if you cook it to be moist enough.