It's much easier than it looks!
A lot of chickens here don't even include the bag of gizzards, so you just open the package, drain the chicken, pop it in a pan, season it up, and toss it in the oven. Whole chickens are very low effort to cook.
What about beans? We buy a bag of dried beans (very cheap) and soak and cook them all at once, then freeze then in portions (about 1 1/2 cups). We like bean/lentil stews or curries or "burritos". I make them all pretty much the same way, just switching up the seasoning and the beans.
I chop up an onion and some garlic, sauté it in a non-stick pan with a little bit of oil. Add a tin of chopped tomatoes and a tin of drained and rinsed beans (or about 1 1/2 cups of pre-cooked beans). Add whatever seasoning you want - curry powder/paste, taco seasoning, cumin and chilli powder. I usually add a crumbled stock cube too. We serve it thick as a filling in tortillas with lettuce, tomato, onion and cheese. Sometimes I'll make it saucier with extra water and add other veg, like sweet potatoes or cauliflower. Then serve it over rice or cous-cous. It's easy, fast (<20 minutes) and cheap.
We also tend to bulk out our meals with sides and serve small portions of meat. We find sweet potatoes, squash, and carrots to be pretty filling. We always have bags of frozen veg around. Cous-cous (not too filling, but fast) is great because you don't really cook it - just cover it in boiling water and let it sit for 5 minutes. We are also fans of bulgar (also pretty filling), which we cook in chicken stock with sautéed onions and garlic.