I'm rating this recipe "good" because to make it "superb" I also modified it a bit.
Instead of dark meat, I used about 3 lbs of boneless skinless chicken breast cut into cubes and sauteed the chicken in the Italian dressing about 5 mins. Although, I'm not sure how necessary that step actually is. It may turn out fine just throwing the raw chicken in and mixing in the Italian dressing. The chicken turned out SOOO tender by the end.
I used a whole 28 oz can of crushed tomato's, about 1/4 cup of Chicken Stock. As mentioned earlier, it was a little watery, but adding the small can of tomato paste about 3 hours in made the consistency PERFECT.
I used two cloves of mint garlic instead of two and to make sure it didn't turn out bland I also seasoned with salt, pepper, thyme leaves and oregano. YUM.
As far as the vegetables the only thing I did differently was that I only used 1/2 an onion instead of a whole onion.
The cook time may vary by your crock pot. I cooked mine on low for only a