Prepare the brown rice according to package instructions until fluffy and set aside.
Cut the chicken breast into bite-sized cubes and toss in a bowl with the arrowroot starch, sea salt, and black pepper until evenly coated.
Heat the sesame oil in a large non-stick skillet over medium-high heat.
Add the chicken cubes to the skillet and sear until golden brown and cooked through, approximately 6-8 minutes.
Remove the chicken from the pan and add the broccoli florets and sliced red bell peppers with a tablespoon of water; cover and steam-sauté for 3-4 minutes until tender-crisp.
While the vegetables cook, whisk together the tamari, honey, minced garlic, and grated ginger in a small bowl.
Return the chicken to the skillet, pour the honey-garlic sauce over the mixture, and toss constantly for 1 minute until the sauce thickens and becomes glossy.
Assemble the bowls by layering the brown rice on the bottom, followed by the glazed chicken and vegetables, and garnish with sliced green onions.