In a slow cooker combine the hoisin sauce, soy sauce, rice vinegar, garlic cloves, water, honey, and Sriracha. Mix well.
Add in half of the peppers, onion, broccoli, and peas. Place the chicken breasts on top of the mixture in the slow cooker.
Cook on low for 7 hours, stirring occasionally if you are home.
A half hour before shred the chicken in the slow cooker. Then steam the remaining vegetables for just a few minutes. Add them to the slow cooker and cover.
Cook for an additional 30 minutes on low.
Serve the chicken and vegetables over top of rice. Top with green onions and sesame seeds.