Cut the chicken breast into 1-inch bite-sized cubes and season evenly with sea salt and black pepper.
In a small mixing bowl, whisk together the fresh orange juice, orange zest, coconut aminos, honey, arrowroot powder, minced ginger, and minced garlic to create the glaze.
Heat the avocado oil in a large non-stick skillet over medium-high heat.
Add the chicken cubes to the skillet in a single layer and sear until golden brown and cooked through, approximately 6 to 8 minutes.
While the chicken is browning, steam the broccoli florets in a steamer basket over boiling water until they are tender-crisp and bright green, about 4 to 5 minutes.
Pour the orange glaze mixture into the skillet with the chicken, stirring constantly for 1 to 2 minutes until the sauce bubbles and thickens into a glossy coating.
Remove from heat and serve the glazed chicken over the steamed broccoli.
Garnish the dish with thinly sliced green onions and a sprinkle of sesame seeds before serving.