Pat the chicken breast dry and cut into 1/2-inch cubes, then season evenly with the sea salt and black pepper.
Heat the avocado oil in a large non-stick skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet in a single layer and sear for 5-6 minutes, turning occasionally until golden brown and cooked through.
Remove the chicken from the pan and set it aside on a plate.
Lower the heat to medium and add the sesame oil to the same skillet, followed by the minced garlic and grated ginger.
Sauté for 30 seconds until fragrant, then add the frozen peas and carrots, stirring for 2-3 minutes until heated through.
Increase the heat slightly and add the cooked brown rice, tamari, and honey to the pan.
Press the rice down with a spatula and let it sit for 1-2 minutes to develop a slight crunch, then stir to combine.
Fold the cooked chicken back into the rice mixture along with the toasted sesame seeds and sliced green onions.
Toss everything together for one final minute to incorporate the flavors before serving warm.