Tuna is cheaper. I can find tuna on sale for dirt cheap prices. I tried substituting it where I could (on salads and in sandwiches)... but some things just aren't the same without chicken.
So, I tried making my own, by freezer cooking chicken. The first time, I used a whole chicken. But I'm all about convenience... and getting all those tiny bones out is such a pain. Now I use bags of frozen boneless skinless chicken breasts. I usually get them for less than $1.99 per pound.
Freezer Cooking Chicken
Toss a bag of chicken in the crockpot, and cook all day.
When it's done, it will fall apart. You'll even end up with a good amount of chicken broth as a bonus that I usually freeze in an icecube tray.
Take the chicken, one piece at a time, and shred between two forks.
Store chicken in a freezer-safe container.
I bag the shredded chicken in 1-cup portions and freeze. Sometimes, I chop the chicken or slice it, depending on what is on the menu for the near future. Shredded is the most popular in our favorite recipes, so that's what I do most often.
Save some money and freeze some chicken!