Cut chicken into large bite sized pieces
Add to a large zipped bag along with 1/4 cup cornstarch and shake together until chicken is well coated
Heat oil in skillet or multi-cooker and add chicken to brown on each side for 4-6 minutes until lightly golden in color, transfer to slow cooker
Remove ribs and seeds from peppers and cut into chunks and add to slow cooker along with drained pineapple
Whisk together 2 tablespoons of cornstarch with 2 tablespoons of water until smooth
Whisk together sugar, vinegar, pineapple juice, soy sauce, ketchup and the cornstarch slurry you just made until smooth
Pour over chicken and veggies
Cover and cook on high for about 3 hours or low for about 6
Garnish with sesame seeds and greens if desired