Prepare the sauce by combining soy sauce, fish sauce, sriracha, and rice vinegar in a small bowl.
In a large skillet, heat sesame oil over medium-high heat.
Add the ground chicken to the skillet and cook until browned, about 5-7 minutes.
Stir in the diced bell peppers and broccoli florets, cooking for another 3-5 minutes.
Pour the prepared sauce over the chicken and vegetables, stirring well to combine.
Let the mixture simmer for an additional 2-3 minutes.
Serve the chicken mixture over cooked brown rice and garnish with sliced green onions.
