Prep the chicken by dicing into 1-inch cubes and seasoning with sea salt and black pepper.
In a small bowl, whisk together the coconut aminos, honey, minced ginger, and minced garlic to create the clean teriyaki sauce.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet and sear for 5-6 minutes, stirring occasionally, until golden brown and cooked through.
Remove the chicken from the pan and set aside; add the broccoli florets and sliced red bell pepper to the same skillet with a splash of water.
Cover and steam the vegetables for 2-3 minutes until they are bright green and tender-crisp.
Return the chicken to the skillet and pour the sauce over the mixture, tossing for 1 minute until the sauce thickens and coats everything.
Remove from heat and stir in the toasted sesame oil.
Serve the stir-fry over the warm brown rice, garnished with sesame seeds and sliced green onions.