Pat the chicken breast dry with a paper towel and cut into bite-sized cubes.
In a small mixing bowl, whisk together the arrowroot powder, garlic powder, ground ginger, sea salt, and black pepper.
Toss the chicken cubes in the spice mixture until each piece is evenly and lightly coated.
Heat the sesame oil in a large non-stick skillet over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and sear for 3-4 minutes per side until golden brown and crispy.
Add the broccoli florets and 2 tablespoons of water to the pan, then immediately cover with a lid for 2 minutes to steam-tenderize the broccoli.
Remove the lid and stir in the coconut aminos and honey, tossing constantly.
Simmer for 1-2 minutes until the sauce reduces into a thick, glossy glaze that coats the chicken and broccoli.
Place the cooked brown rice in a bowl, top with the crispy chicken and broccoli mixture, and garnish with toasted sesame seeds.