Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized cubes and chop the broccoli into uniform florets.
In a small mixing bowl, whisk together the fresh orange juice, tamari, honey, sesame oil, arrowroot powder, minced garlic, and grated ginger until smooth.
Place the chicken and broccoli on the prepared baking sheet and season with sea salt and black pepper.
Pour half of the orange glaze over the chicken and broccoli, tossing thoroughly to ensure every piece is coated.
Spread the mixture into a single layer and bake for 15-18 minutes until the chicken is cooked through and the broccoli is tender-crisp.
While the chicken roasts, sauté the cauliflower rice in a non-stick skillet over medium heat for 5 minutes until softened and hot.
Remove the baking sheet from the oven, drizzle the remaining glaze over the top, and serve immediately over the cauliflower rice garnished with sesame seeds.