Dice the chicken breast into bite-sized pieces and pat dry with a paper towel.
In a small bowl, toss the chicken with arrowroot powder, sea salt, and black pepper until evenly coated.
Heat the toasted sesame oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-6 minutes, turning occasionally until the edges are golden and crispy.
Lower the heat to medium and add the minced garlic and grated ginger, sautéing for 30 seconds until fragrant.
Pour in the coconut aminos and stir constantly for 1-2 minutes until the sauce thickens into a glossy glaze over the chicken.
Assemble the bowl by placing the cooked rice at the base, then topping with the teriyaki chicken, sliced cucumber, radishes, edamame, and avocado.
Garnish with nori strips and sesame seeds before serving.