Bring a large pot of salted water to a boil. When it is boiling, add the noodles and cook al dente. When the noodles are done, drain them and toss in 2-3 teaspoons of olive oil.
Whisk together the soy sauce, brown sugar, vinegar, sweet chili sauce, and dark sesame oil. Set aside.
While the noodles are cooking, heat a large skillet over high heat. When the oil is hot, add the sliced onions, garlic, and ginger. Stir fry 1-2 minutes or until fragrant, but the garlic isnâ€™t burning. Add the peas (or beans or edamame) and stir fry for about 30 seconds. Add the zucchini and peppers and stir fry for another 30 seconds or until the veggies are crisp-tender. Add the noodles and stir fry until the noodles are well-combined with the vegetables. Give the sauce a quick whisk and then drizzle it evenly over the noodles and stir fry the entire mixture for about 30-60 seconds or until everything is well-coated in the sauce.
Serve immediatelyâ€“if you want, you can garnish individual servings with chopped cilantro, lime wedges, and black sesame seeds.