Cook soba noodles according to package directions, drain, and set aside.
In a small bowl, whisk together gochujang, tamari, sesame oil, honey, minced garlic, and grated ginger.
Season sliced chicken breast with sea salt and black pepper.
Heat avocado oil in a large skillet or wok over medium-high heat.
Add chicken and sear until golden and cooked through, about 5-6 minutes.
Remove chicken from pan and add broccoli, bell peppers, and snap peas with a splash of water to steam-fry until tender-crisp.
Return chicken to the pan, add the cooked noodles, and pour the gochujang sauce over everything.
Toss well for 1-2 minutes until the sauce thickens and coats every ingredient.
Garnish with sliced green onions and sesame seeds before serving.