Cook pasta according to package directions. Meanwhile, halve the fresh pea pods diagonally. Place the pea pods and chicken in a large colander. Pour hot cooking liquid from pasta over pea pods and chicken in colander; drain well. Return pasta, pea pods, and chicken to the hot pan. Add pineapple.
Meanwhile, for sauce, in a small saucepan stir chicken broth into peanut butter. Heat and stir with a whisk until peanut butter melts. Stir in soy sauce, lime juice, red pepper, and garlic; heat through.
Add sauce to the pasta mixture. Gently stir to coat pasta with sauce. Makes 4 servings.