Some remarks on your shopping which may have a lot of influence on the total price:
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$6 - Chicken - I got the smallest package of white meat chicken that I could, store brand (not Purdue or Tyson or whatever).
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Don’t buy the tiny package, buy the big package and freeze whatever you don’t use right now. As others have said, a whole chicken is the cheapest, chopped fillets/breasts are the most expensive. I don’t know much about tacos, but if they contain baked “shredded” meat, you can probably get any meat with bone (drum stick / wings / whole chicken) cook it and tear the meat off with a fork. Really easy.
That seems expensive, but fresh vegetables can be, depending on the time of year - and they don’t get better when they’re expensive either. Depending on what you want did with it, a can of (chopped) tomatoes is probably a lot cheaper alternative.
Don’t buy kits. Read what’s in the kit and buy that separately. Again, if you can store/freeze it, buy larger amounts. If you’re lazy buy a pot of salsa, otherwise, make your own (and you can use half of that can of chopped tomatoes).
How big a block was that? Anyway, I usually have two chunks of plain dutch cheese in the fridge, and unless I need a really special type of cheese (like soft goat cheese or mozzarella) I just shred some of those.
Again, get a large container. If my supermarket prices are anything like yours, you can get a container 3 times the size of the small one for more or less the same price. It’ll keep in the fridge for a few days at least.
In general, get larger amounts of anything that’ll keep, and don’t buy anything that’s pre-mixed or in a kit and your prices will go down significantly. Kits especially are extremely expensive for what you get.