Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast into bite-sized cubes and season evenly with sea salt and black pepper.
Place the chicken on the prepared baking sheet and bake for 12-15 minutes until the internal temperature reaches 165°F.
While the chicken bakes, steam the broccoli florets in a steamer basket over boiling water for 4-5 minutes until tender-crisp.
In a small saucepan, whisk together the orange juice, tamari, honey, minced ginger, minced garlic, and cornstarch.
Simmer the sauce over medium heat for 2-3 minutes, whisking constantly until it thickens into a glossy glaze.
Remove the chicken from the oven and transfer it to a large bowl along with the steamed broccoli.
Pour the orange glaze over the chicken and broccoli, tossing gently to ensure every piece is well coated.
Serve the glazed chicken and broccoli over the cooked brown rice and drizzle with sesame oil before serving.