Bring salted water to a boil. Cook pasta according to package directions. Drain and set aside.
Meanwhile, slice bell pepper into strips and onion into thin wedges.
Heat oil over medium-high heat 1 - 3 minutes or until shimmering.
Slice chicken on a bias into 1/2 inch pieces.
Combine chicken and seasoning mix in a mixing bowl.
Add chicken mixture to a skillet. Cook and stir 4 - 6 minutes or until centers of chicken are no longer pink.
Add bell pepper, onion and stir-fry mix to skillet. Cook and stir 2 - 3 minutes or until vegetable are crisp-tender.
Prepare the glaze by whisking all Glaze ingredients in a small mixing bowl.
Move chicken and vegetable up sides of the skillet, making a well in the center. Add glaze and bring to a boil. Add pasta to skillet. Toss with chicken, vegetables and glaze.
Garnish with cashews, if desired and serve.