Pat the chicken breast dry with a paper towel and cut into 1-inch uniform cubes.
In a medium bowl, toss the chicken cubes with arrowroot powder, sea salt, and black pepper until every piece is evenly coated.
In a small glass jar or bowl, whisk together the honey, tamari, sesame oil, minced garlic, and grated ginger to create the glaze.
Heat the avocado oil in a large non-stick skillet over medium-high heat and sear the chicken until golden and crispy on all sides, about 6-8 minutes.
While the chicken cooks, steam the broccoli florets in a steamer basket for 4-5 minutes until they reach a tender-crisp texture.
Pour the honey-garlic glaze over the crispy chicken in the skillet and simmer for 2 minutes until the sauce becomes thick and glossy.
In a separate bowl, combine the cauliflower rice and cooked brown rice, then divide the mixture into serving bowls.
Top the rice blend with the glazed chicken and steamed broccoli, drizzling any remaining sauce from the pan over the top before serving.