Peel and cut the sweet potatoes into large pieces, I cut mine into 1 inch pieces. Cut the onion the same way and separate the pieces so they aren't stuck together. Spray a 6-quart slow cooker with non-stick spray, add the sweet potato and onion pieces to the slow cooker in an even layer.
Place a large skillet on the stove-top over medium high heat. Add enough oil to cover the bottom of the pan. Add the chicken skin down first, and cook until it browns, flip the chicken and brown the other side too. Remove the chicken with tongs and add on top of the sweet potatoes and onions in the slow cooker. Sprinkle the salt, pepper and thyme over the chicken and veggies.
Cover and cook on HIGH for 4 hours.
Serve and enjoy.
Nutritional values are approximate. If you require a special diet, please use your own calculations. Values below are for 1/5 of the recipe.