Pat the chicken breast dry with a paper towel and cut into 1-inch cubes.
In a small bowl, toss the chicken cubes with arrowroot powder, sea salt, and black pepper until evenly coated.
Place the broccoli florets and sliced red bell pepper in a steamer basket over boiling water and steam for 4-5 minutes until tender-crisp.
Heat the toasted sesame oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 6-8 minutes, turning occasionally, until golden brown and cooked through.
While the chicken cooks, whisk together the honey, tamari, minced garlic, and grated fresh ginger in a small ramekin.
Reduce the heat to medium-low and pour the honey-tamari mixture over the chicken, stirring constantly for 1 minute until the sauce becomes thick and glossy.
Place the warm cooked brown rice in the base of a bowl and top with the steamed vegetables and the glazed chicken.
Garnish with thinly sliced green onions before serving.