Cook the brown rice according to package instructions and set aside.
Pat the chicken breast dry, cut into bite-sized cubes, and toss in a bowl with arrowroot powder, sea salt, and black pepper until evenly coated.
In a small jar, whisk together the honey, tamari, and minced garlic to create the glaze.
Heat the toasted sesame oil in a large non-stick skillet over medium-high heat. Add the chicken and sear until golden brown and cooked through, about 6-8 minutes.
While the chicken cooks, steam the broccoli florets and diced red bell pepper until they are tender-crisp and bright in color.
Add the cauliflower rice to the skillet with the chicken, sautéing for 2 minutes to soften.
Pour the honey-garlic sauce into the skillet and toss with the chicken and cauliflower rice until the glaze thickens and becomes sticky.
Divide the cooked brown rice into a bowl, top with the honey-garlic chicken mixture and steamed vegetables, and garnish with sesame seeds.