In skillet, heat 2 tablespoons olive oil over medium-high heat. Add bell pepper, onion and garlic. Saute until crisp-tender. Remove to a plate. In same pan, over medium-high heat, heat remaining 2 tablespoons oil. Add asparagus and spinach and saute 3 minutes. Return cooked vegetables to pan. Add chicken broth. Cook 2 minutes. To serve, add olives, parsley and pepper.