Bring a pot of water to a boil and cook the soba noodles according to package directions, then drain and set aside.
Slice the chicken breast into thin, bite-sized strips and season evenly with sea salt and black pepper.
Heat the avocado oil in a large skillet or wok over medium-high heat.
Add the chicken to the skillet and sear until golden brown and cooked through, approximately 5-6 minutes.
Add the broccoli, red bell pepper, and sugar snap peas to the skillet, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Stir in the minced garlic and grated ginger, cooking for 1 minute until the aromatics are fragrant.
In a small bowl, whisk together the tamari, rice vinegar, and toasted sesame oil.
Add the cooked soba noodles and the sauce mixture to the skillet, tossing everything together for 1-2 minutes until well-coated and heated through.