Crock Pot Orange Chicken

I found this recipe on Pinterest
(oh, how I love pinterest)
It looked DELICIOUS and I couldn't wait to try it. In the original recipe (found here) didn't specify how much chicken so I guessed..thinking I would just double the recipe. It turned out alright, but too much orange. I will definitely try it again, but follow it EXACTLY.

Ingredients:
3-4 boneless chicken breasts, chopped into small chunks
1/3 cup flour
olive oil
1/2 T salt
1 teaspoon balsamic vinegar
3 T ketchup
6 oz. frozen orange juice concentrate (thaw or throw it in the microwave for 45 seconds)
4 T brown sugar

Directions:
In a bowl, mix the orange juice, brown sugar, vinegar, salt, and ketchup
Pour the flour in a small bowl
Cover the chicken breast chunks in flour and shake off the excess.
Pour a small amount of olive oil in a skillet and brown the flour-covered chicken.
(The chicken doesn't need to be fully cooked since it's going in the crock pot)
After the chicken is done cooking, pour the pieces into the crock pot.
Then cover the chicken with your sauce mixture

Cook on low for 5-6 hours or on high for 2-3


Serve over rice