Slice the chicken breast into thin, bite-sized strips and season with sea salt and black pepper.
Prepare the zucchini by using a spiralizer or julienne peeler to create long, noodle-like strands.
Heat the avocado oil in a large skillet or wok over medium-high heat until shimmering.
Add the chicken to the skillet and sear until golden brown and cooked through, about 5-6 minutes.
Remove the chicken from the pan and set aside, then add the sliced mushrooms to the same skillet.
Sauté the mushrooms until they release their moisture and turn a deep golden brown.
Stir in the minced garlic, grated ginger, and red pepper flakes, cooking for 30 seconds until fragrant.
Add the zucchini noodles and cooked chicken back into the pan, tossing everything together.
Pour in the coconut aminos and toasted sesame oil, stirring constantly for 2 minutes until the zucchini is tender-crisp.
Serve immediately in a shallow bowl while the flavors are bright and the textures are firm.