Begin by trimming your chicken breasts and seasoning them with salt and pepper, then place them in your slow cooker.
In a medium bowl, combine the honey, soy sauce, ketchup, vegetable oil, minced garlic, diced onion, and red pepper flakes. Stir well to ensure all ingredients are fully incorporated. Pour the mixture over the chicken in the slow cooker.
Cook on low heat for 3-4 hours or on high heat for 1.5 to 2.5 hours, until the chicken is tender and cooked through.
Once done, remove the chicken from the crock pot and cut it into bite-sized chunks.
Serve the honey bourbon chicken over rice or with your favorite side dishes, and enjoy the delicious blend of flavors!