Pour oil into the slow cooker and then add onions and 1/2 of the tomatoes.
Next put in your vegetables and nestle the chicken thighs on top.
Add your garlic, spices, Better than Bouillon, tomatoe paste and tomatoes together and mix well.
Pour the tomatoe mixture over the chicken and place the lid on top.
When done, shred the chicken a bit with two forks. If you want to get rid of some of the liquid you can turnn it up to high and keep the lid off for about 10 minutes.