Heat olive oil in a Dutch oven over medium-high heat. Add red bell pepper, jalapeño, salt, and black pepper; sauté 3 minutes or until tender. Add chopped kale and broth; cover. Reduce heat to medium-low; cook 10 minutes or until tender, stirring once. Stir in garlic; increase heat to medium. Cook, uncovered, for 2 minutes or until liquid evaporates. Serve with lemon wedges, if desired.