Cut the chicken breast into bite-sized pieces and pat thoroughly dry with a paper towel.
In a medium bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until every piece is lightly coated.
In a small jar or bowl, whisk together the coconut aminos, honey, grated fresh ginger, and minced garlic to create the teriyaki glaze.
Heat the toasted sesame oil in a large non-stick skillet over medium-high heat.
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 to the pan with one tablespoon of water, then immediately cover with a lid to steam for 2 minutes.
Remove the lid and pour the prepared teriyaki sauce over the chicken and broccoli.
Stir constantly for 1-2 minutes until the sauce thickens into a glossy glaze that coats everything evenly.
Serve the crispy chicken and broccoli immediately over the warm cooked brown rice.