Trim the fat from the chicken breasts and cut into bite-sized pieces. Transfer to a bowl, toss in the cornstarch and set aside.
Place the diced chicken in the slow cooker, add the onion and red bell pepper. Toss to combined.
Now make the sauce. Combine the honey, soy sauce, water, Worcestershire sauce, Sriracha sauce, granulated garlic, red pepper flakes and black pepper. Whisk to combine and pour in the slow cooker.
Set the slow cooker to low and cook for six hours. (or four hours on high)
When the chicken is done cooking, turn the slow cooker to the WARM setting.
Serve with rice and steamed vegetables.
Notes
If you enjoy your chicken really spicy, feel free to add a another tablespoon of Sriracha sauce.If you want to cook this dish on the LOW setting, this dish will be done in 6-7 hours instead of the 4 listed below. Be on the lookout for the sauce thickening and the chicken being fork-tender.