Cook the noodles as the label directs, then drain and toss with 1 tablespoon roasted peanut oil. Meanwhile, whisk the lime juice and 2 teaspoons teriyaki sauce in a small bowl. Combine the jalapeno (remove seeds for less heat), ginger and lime zest in a mini food processor and pulse until finely chopped, or finely chop with a knife.
Heat the remaining 1 tablespoon roasted peanut oil in a large nonstick skillet over medium-high heat. Add the onion and cook, stirring, until soft, 5 minutes. Add the ginger mixture and cook, stirring, until toasted, 1 minute. Add the bell peppers and cook, stirring, 3 more minutes. Add the turkey and the remaining 2 teaspoons teriyaki sauce; cook, stirring, until the meat is cooked through, about 5 more minutes.
Remove from the heat and stir in the lime juice mixture, cashews and herbs. Pile the noodles and turkey mixture in the lettuce leaves. Serve with lime wedges.