Cook pasta to desired doneness as directed on package. Drain; rinse with cold water to cool.
Meanwhile, in resealable food storage plastic bag, combine chicken and taco seasoning mix; shake to coat. In large nonstick skillet, heat 1 tablespoon oil over medium heat until hot. Add chicken; cook and stir 8 to 10 minutes or until golden brown and no longer pink in center. Remove from heat.
In blender container or food processor bowl with metal blade, combine all dressing ingredients. Blend 30 seconds or until well blended.
In large serving bowl, combine cooked rotini, corn, beans and dressing; toss to coat. Fold in cooked chicken. Serve warm or cold.