1. Preheat grill to medium-high heat.
2. Combine first 4 ingredients in a medium bowl; stir well. Add chicken; toss to coat.
3. Place chicken on grill rack coated with cooking spray; grill 4 minutes on each side or until done. Remove from grill; cover.
4. Cook noodles according to package directions, omitting salt and fat. Drain and rinse with cold water; drain well. Combine Szechuan sauce, peanut butter, soy sauce, and juice in a large bowl, stirring with a whisk. Add noodles, carrots, and green onions; toss and serve immediately with chicken.