Place chicken, onion and seasoned salt in slow cooker and cook on high for 4 hours. When done shred chicken and add in sesame seeds and teriyaki sauce turn slow cooker to warm and set aside.
Prepare slaw by putting, coleslaw mix, onions and sesame seeds in bowl and toss to mix. Mix together vinegar, mayonnaise and powdered sugar in small bowl until blended then pour over slaw mix.
Slice dinner rolls horizontally then place about 1/4 cup of shredded chicken on bottom part of dinner roll then place 2 heaping tablespoons of slaw mix over chicken sprinkle with green onions and top with top half of roll!! Enjoy!!