Dice the chicken breast into bite-sized pieces and season evenly with the sea salt and black pepper.
Heat the extra virgin olive oil in a large skillet over medium-high heat until shimmering.
Add the chicken to the skillet and cook until golden brown and cooked through, approximately 5 to 7 minutes.
Remove the cooked chicken from the pan and set it aside on a plate.
In the same skillet, add the broccoli florets, sliced red bell pepper, and sliced zucchini.
Sauté the vegetables for 4 to 5 minutes until they are crisp-tender and maintain their bright color.
Stir in the minced garlic and grated fresh ginger, cooking for 1 minute until the aromatics are fragrant.
Return the chicken to the pan and drizzle the tamari and toasted sesame oil over the mixture.
Toss everything together for 1 to 2 minutes to allow the flavors to meld, then serve immediately.