1In 12-inch skillet, melt butter over medium heat. Add garlic; cook about 1 minute, stirring occasionally, until softened.
2Stir in uncooked pasta and broth. Heat to boiling, stirring occasionally; reduce heat to medium-low. Cover; simmer 11 minutes. Stir well.
3Spread broccoli and chicken over pasta. Cover; cook 12 to 14 minutes longer or until pasta is tender.
4Stir in lemon peel. Top with cheese.