2  teaspoons grated lime peel 1/4  cup lime juice 2  tablespoons olive or canola oil 2  tablespoons chopped fresh cilantro 1/2  teaspoon sugar 1/2  teaspoon salt 1  small jalapeño chile, seeded, finely chopped 1  clove garlic, finely chopped 4  boneless skinless chicken breasts (1 1/4 lb) To make marinade, in shallow glass or plastic dish,…