1. Cook pasta according to package directions. Drain, and set aside.
2. Sprinkle pork with 1/4 teaspoon salt and dredge in cornstarch. Heat peanut oil in a large nonstick skillet over medium-high heat. Add pork and sauté 8 minutes or until browned on all sides.
3. Combine pasta, pork, bell pepper, and onion in a large bowl.
4. To prepare sauce, combine chicken broth, remaining 1/4 teaspoon salt, and next 6 ingredients (through crushed red pepper) in a small bowl, stirring with a whisk until blended. Pour over pasta and pork mixture, tossing to coat. Sprinkle with sesame seeds and green onions, if desired. Serve immediately.