Pat the chicken breast dry and cut into 1-inch cubes.
In a medium bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until evenly coated.
Steam the broccoli florets for 4-5 minutes until tender-crisp and bright green.
In a small jar or bowl, whisk together the honey, tamari, minced garlic, and grated ginger.
Heat the toasted sesame oil in a large non-stick skillet over medium-high heat.
Add the chicken to the skillet in a single layer and sear for 3-4 minutes per side until golden and crispy.
Reduce heat to medium and pour the honey-garlic sauce over the chicken, tossing to coat for 1-2 minutes until the sauce thickens into a glaze.
Divide the cooked brown rice and steamed broccoli into bowls, top with the glazed chicken, and garnish with sesame seeds and sliced green onions.