Heat oven to 425°F. Cook peas as directed on package; drain. In 4-quart ovenproof Dutch oven, melt butter over medium-high heat; cook sausage in butter 3 minutes or until lightly browned. Add onion and poblano chile; cook 3 minutes. Stir in flour and seasoning mix; cook and stir 1 minute. Gradually add broth, stirring to loosen particles from bottom of Dutch oven. Cook 3 minutes, stirring constantly, until broth begins to thicken. Stir in peas and chicken; heat to boiling.