In a small mixing bowl, add all the ingredients for the sauce and stir with a whisk until well incorporated. Set aside.
Coat a skillet with cooking spray and heat over medium-high heat. When pan is hot enough, add shrimp and saute until they start to turn pink but are still slightly translucent. Stir in green onions, bell pepper, snow peas and bok choy.
Continue cooking for a minute or two, until the vegetables start to wilt.
Stir in sauce and cook for an additional minute.
Transfer to serving plate and garnish with sesame seeds