Cut the chicken breast into bite-sized pieces and pat dry with a paper towel.
In a small bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until evenly coated.
In a separate small jar, whisk together the orange juice, coconut aminos, honey, minced ginger, minced garlic, and water to create the sauce.
Heat the avocado oil in a large skillet over medium-high heat. Add the chicken and sear for 5-6 minutes, turning occasionally, until golden and cooked through.
Add the broccoli florets to the skillet with a splash of water, cover with a lid, and steam for 2-3 minutes until bright green and tender.
Remove the lid and pour the orange sauce mixture over the chicken and broccoli. Stir in the sesame oil.
Simmer for 1-2 minutes until the sauce thickens into a glossy glaze that coats everything beautifully.
Garnish with sesame seeds and serve immediately.