Chop an onion and place in the bottom of the crock-pot. Mix together the following spices and rub over a whole chicken. I also loosen some of the chicken skin and rub the spices right on the meat.
4 tsp salt
2 tsp paprika
1 tsp cayenne pepper (Sometimes I leave this out; its great, but too spicy for the kids.)
1 tsp onion powder
1 tsp thyme
1/2 tsp garlic powder
1/2 tsp black pepper
Set your spiced chicken on top of the onion and cook on low 4-8 hours. The chicken will be tender and very easy to pull off of the bone when done.
I usually remove the meat and throw all of the bones back in the crock-pot with some water to cook overnight and make stock. One chicken gives us enough meat for a meal, leftover chicken to add to one or two casseroles or soups, plus several containers of stock! Try it and let me know what you think. :)