Huli Huli Chicken is a traditional Hawaiian dish that is grilled. I'm not Hawaiian but I love the food. Since I really can't grill chicken (I burn it every time) I have developed a similar recipe that would give me the flavors.
I mix everything except the chicken and onions in the crock pot first. We like spicy foods but not really hot so I cut the pepper in just two halves so I can pull it out before serving. Then add the chicken breasts, pushing them under the sauce. I usually don't plan ahead enough to thaw the chicken so I put them in frozen. Put the onion chunks on top to keep them from turning to mush.
Start with the cooker on high then once it all starts to bubble turn it down on low. It took my cooker about 3 1/2 hours. If you're leaving the house I would just start it on low and would be fine for a lot longer.