Bring a pot of water to a boil and cook the soba noodles for 4-5 minutes until al dente, then drain and rinse with cold water to prevent sticking.
In a large skillet over medium-high heat, add the ground turkey, minced garlic, and grated ginger, breaking the meat apart with a spatula as it browns.
Season the turkey with sea salt and black pepper, cooking until no longer pink and slightly crispy on the edges.
Add the chopped baby bok choy to the skillet and sauté for 2 minutes until the leaves are wilted and the stems are tender-crisp.
In a small bowl, whisk together the tahini, tamari, rice vinegar, toasted sesame oil, Sichuan chili oil, and ground Sichuan peppercorns until smooth.
Add the cooked soba noodles to the skillet and pour the sauce over the mixture, tossing everything together until evenly coated and heated through.
Garnish with sliced green onions and serve immediately for a restaurant-quality meal at home.