In a small bowl, whisk together the coconut aminos, raw honey, grated fresh ginger, minced garlic, and arrowroot powder to create a clean teriyaki glaze.
Cut the chicken breast into bite-sized pieces and season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet over medium-high heat; add the chicken and sear until golden brown and cooked through, about 5-6 minutes.
Remove the chicken from the skillet and set aside on a plate.
In the same skillet, add the green beans and 2 tablespoons of water. Cover with a lid for 2-3 minutes to steam the beans until they are vibrant and crisp-tender.
Remove the lid, add the toasted sesame oil and sesame seeds to the green beans, and toss for 1 minute until fragrant.
Return the chicken to the skillet and pour the prepared teriyaki glaze over the chicken and beans.
Stir constantly for 1-2 minutes until the sauce thickens and glossy bubbles form, coating the ingredients thoroughly.
Serve the teriyaki chicken and sesame green beans immediately over the warm, fluffy brown rice.