Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Prepare the brown rice according to package instructions so it is warm and ready for serving.
Cut the chicken breast into one-inch cubes and season evenly with sea salt and black pepper.
In a small mixing bowl, whisk together the orange juice, coconut aminos, honey, arrowroot powder, sesame oil, grated ginger, and minced garlic until smooth.
Place the chicken cubes and broccoli florets on the prepared baking sheet and pour half of the orange glaze over them, tossing to coat thoroughly.
Spread the chicken and broccoli in a single layer and bake for 15 to 18 minutes, or until the chicken is cooked through and the glaze has thickened.
Remove from the oven, drizzle the remaining glaze over the chicken, and serve immediately over the fluffy brown rice.