Coat inside of Crockpot™ slow cooker with nonstick cooking spray. Heat oil in large skillet over medium-high heat. Add onion, ginger, garlic and jalapeño peppers; cook 1 minute. Add kale; cook and stir 2 minutes or until slightly wilted. Remove kale mixture to slow cooker. Add broth and chickpeas.
Cover; cook on LOW 3 hours. Turn off heat. Stir in lime juice and lime peel. Serve with rice, if desired.