Rinse the jasmine rice under cold water until clear, then combine with 0.5 cups of water in a small pot, bring to a boil, reduce to low, cover, and simmer for 15 minutes.
While rice cooks, dice the chicken breast into bite-sized pieces and season with sea salt and black pepper.
Mince the garlic and grate the fresh ginger.
Heat avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and cook until golden brown and cooked through, about 5-6 minutes, then remove from the pan and set aside.
In the same skillet, add the broccoli florets and sliced red peppers with a splash of water, covering for 2 minutes to steam-soften.
Remove the lid, add the garlic and ginger, and sauté for 1 minute until fragrant.
Return the chicken to the pan, drizzle with tamari and toasted sesame oil, and toss everything together for 1-2 minutes to glaze.
Fluff the jasmine rice with a fork and serve the stir-fry immediately over the rice.