Add the ingredients for the sauce to a small blender and blend until combined. Set aside until ready to use.
Make the Zucchini Noodles:
Heat the oil in a large wok or skillet over medium-high heat. Add the garlic and bell pepper and sauté, stirring occasionally for 2 minutes. Add the remaining ingredients and cook, stirring frequently until zucchini noodles have softened, but are still al dente, about 3 to 5 minutes. Add the sauce and continue stirring until everything is well-combined and coated. Sprinkle sea salt to taste.
Serve Thai zucchini noodles with cashews, lime wedges, chopped cilantro (or basil), and a sprinkle of sesame seeds.