Pat the chicken breast dry with a paper towel and cut into bite-sized pieces.
In a medium bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until every piece is evenly coated.
In a small jar or bowl, whisk together the orange juice, coconut aminos, raw honey, minced ginger, and minced garlic to create the stir-fry glaze.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sear for 5-6 minutes, turning occasionally, until the edges are crispy and golden brown.
Add the broccoli florets to the pan with two tablespoons of water, then cover with a lid for 2 minutes to steam until bright green and tender-crisp.
Remove the lid and pour the orange glaze over the chicken and broccoli.
Stir constantly for 1-2 minutes until the sauce bubbles and thickens into a glossy coating.
Turn off the heat, drizzle with sesame oil, and sprinkle with sesame seeds before serving immediately.