Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast into 1-inch cubes and pat them dry with a paper towel to ensure a good sear.
In a medium bowl, toss the chicken cubes with avocado oil, sea salt, and black pepper until well coated.
Spread the chicken in a single layer on the baking sheet and roast for 15 to 18 minutes until fully cooked.
While the chicken is roasting, whisk the orange juice, coconut aminos, honey, arrowroot powder, minced garlic, and grated ginger in a small saucepan.
Place the saucepan over medium-low heat and simmer for 3 to 5 minutes, whisking constantly, until the sauce thickens into a glossy glaze.
Steam the broccoli florets over boiling water for about 4 minutes until they are tender-crisp and bright green.
Once the chicken is done, transfer it to a bowl and pour the warm orange glaze over it, tossing to ensure every piece is coated.
Serve the glazed chicken over the cooked brown rice with the steamed broccoli on the side.
Garnish with sesame seeds for a light crunch and serve immediately.