Pat the chicken breast dry and cut into 1-inch bite-sized pieces.
In a medium bowl, toss the chicken with sea salt, black pepper, and arrowroot powder until evenly coated.
In a small jar, whisk together the orange juice, coconut aminos, honey, and sesame oil to create the glaze.
Heat olive oil in a large skillet over medium-high heat and sear the chicken until golden brown and cooked through, about 5-6 minutes.
Remove chicken from the pan and set aside; add the broccoli florets and a splash of water, covering for 2 minutes to steam-soften.
Stir in the garlic and ginger, sautéing for 30 seconds until fragrant.
Return the chicken to the skillet and pour the orange glaze over the mixture, tossing constantly until the sauce thickens and coats everything beautifully.
Garnish with sesame seeds and serve immediately.