Chicken and sweet potato stew

I bought chicken yesterday and so I dug out my crockpot cookbook and found a recipe that seemed to work with the ingredients I had to hand (I realize it is possible to find a desirable recipe first and then buy the proper ingredients, but I never seem to do things in the proper order).

The recipe (as I'm using it):

1 package chicken breasts cut into pieces
2 sweet potatoes, peeled and cubed
2 regular potatoes, peeled and cubed
1 cup of chicken stock
1 can of diced tomatoes
salt
pepper
cinnamon
dried basil

All thrown into the crockpot, where it's been cooking away for almost five hours now. The little taste I had earlier was yummy.

The original recipe also called for celery seed, ground nutmeg, paprika, and maybe a few other things but I made do with what I had.