- Heat 1 tbsp butter in a large pan on medium heat. 
- Sauté green peppers and onions until tender but not brown, about 5 minutes.  Set aside. 
- Add the remaining tbsp butter to the sauté pan. 
- Brown chicken breasts on one side over medium-high heat. 
- Flip the breasts over and add the garlic to the pan.  Cook the garlic until lightly golden and brown the other side. *If you have large breasts, do this in two batches so the breasts have room to sear. 
- Spray the crockpot with cooking spray. 
- Then add the chicken and garlic, seasonings, pineapple, BBQ sauce, green peppers, and onions.  
- Stir all together and cook on LOW for 6-7 hours, depending on the size of the breasts. *see tips 
- Rest 5-10 minutes, shred, and serve.