Salt and pepper chicken and place in your slow cooker.

Place onion on top of chicken.

In a medium sized bowl, combine honey, soy sauce, ketchup, oil, garlic, and red pepper flakes. Pour mixture over the chicken in the crockpot.

Cook on low for 3-4 hours

Remove chicken from crock pot and slice into strips.

In a small bowl, combine 1 Tbsp cornstarch with 1 Tbsp water. Pour into sauce remaining in the crock pot and stir to combine. If sauce is not thick enough repeat with another Tbsp of the cornstarch/water.

Place the chicken back in the sauce and stir around to recoat the chicken in the sauce.

Serve over cooked rice and sprinkle some sesame seeds on top (optional).