2cupschicken brothI’ve always got some in the freezer, if you don't you can just use water and they'll still be really good, but they're not as nutritious that way.
Taco seasoningsAbout 1/4 cup or more to your taste depending on how spicy you want it.
About 2 pounds boneless chicken breasts. You can throw them into the crock pot frozen solidwhich is great for people like me who never remember to get meat out of the freezer ahead of time. (We get ours from a local farm but if you don't have a good source, you can order online here.)
Make your own soft tortilla shells ahead of time since there just aren’t any at the store that get by my filter anymore.And if the ingredient label isn’t too bad, they taste terrible. Do you know of any good brands? One thing I did find, though, were some crunchy corn taco shells with an ingredient label that didn’t make me squirm too bad. Although it wasn’t organic, so it was likely GMO corn. UPDATE: I get these flour tortillas sometimes nowadays.
In the morning, put the broth, chicken and seasonings into your crock pot on high. Let it cook all day, and when the chicken falls apart easily, use a fork to shred it while it's still in the crock pot.