Place the boneless, skinless chicken thighs or breasts in the crockpot.
In a bowl, mix soy sauce, honey, tomato paste, chili paste, garlic, and rice vinegar.
Pour the sauce over the chicken, ensuring it’s well-coated.
Cover and cook on Low for 6-7 hours or High for 3-4 hours until tender.
In the last 30 minutes, mix cornstarch with a little water and stir it into the sauce.
Let it thicken while cooking uncovered for the remaining time.
Once done, shred or slice the chicken and mix it well with the sauce.
Serve hot over rice, quinoa, or cauliflower rice, garnished with sesame seeds and green onions.