Bring a pot of water to a boil and cook the brown rice noodles according to package directions, then drain and set aside.
In a small bowl, whisk together the tahini, tamari, chili oil, rice vinegar, honey, and water until the sauce is smooth and creamy.
Toast the Sichuan peppercorns in a dry skillet over medium heat until fragrant, then grind them into a fine powder using a mortar and pestle.
Heat the avocado oil in a large non-stick skillet over medium-high heat, then add the ground turkey and cook until browned and crumbled.
Stir in the minced garlic, grated ginger, and ground Sichuan peppercorns, cooking for 1 minute until the aromatics are fragrant.
Add the baby bok choy to the skillet and sauté for 2-3 minutes until the leaves are wilted and the stems are tender-crisp.
Add the cooked noodles and the prepared sauce to the skillet, tossing everything together until the noodles are well-coated and heated through.
Season with sea salt and garnish with thinly sliced scallions before serving in warm bowls.