Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper for easy cleanup.
Dice the chicken breast into 1-inch bite-sized pieces and season them evenly with sea salt and black pepper.
In a small saucepan over medium heat, whisk together the fresh orange juice, coconut aminos, minced ginger, and minced garlic.
In a small bowl, create a slurry by mixing the arrowroot powder with one teaspoon of water, then whisk it into the saucepan until the glaze thickens and becomes glossy.
Toss the chicken pieces in the avocado oil and then the orange glaze until every piece is well coated.
Spread the glazed chicken onto the prepared baking sheet in a single layer and bake for 15-18 minutes until fully cooked through.
While the chicken is in the oven, steam the broccoli florets in a steamer basket for 5-7 minutes until they are crisp-tender and vibrant green.
Portion the cooked brown rice into a bowl, top with the glazed chicken and steamed broccoli, and finish with a garnish of sesame seeds and sliced green onions.