Preparation Place beans in large saucepan. Add enough water to cover by 4 inches. Let stand overnight. Preheat oven to 350°F. Heat oil in heavy large ovenproof pot over medium-high heat. Sprinkle chicken with salt and pepper. Working in batches, cook chicken until golden brown, about 7 minutes per side. Transfer chicken to large plate. Add pancetta and next 6 ingredients to same pot. Cook until vegetables begin to brown and soften, stirring frequently, about 10 minutes. Add garlic; stir 1 minute. Add tomato paste; stir 2 minutes. Add flour; stir 1 minute. Add wine and simmer 1 minute. Drain beans. Add beans to pot; stir to combine. Add broth; season with salt and pepper. Place rosemary sprig and chicken atop bean mixture. Cover pot; transfer to oven. Braise until chicken and beans are very tender, about 1 hour. Transfer chicken to plate. Season beans with salt and pepper. Mix 2 tablespoons finely chopped rosemary, parsley, and lemon peel in small bowl. Divide beans among 6 shallow bowls. Top each with chicken. Sprinkle each with parsley mixture and serve.
Preparation Place beans in large saucepan. Add enough water to cover by 4 inches. Let stand overnight. Preheat oven to 350°F. Heat oil in heavy large ovenproof pot over medium-high heat. Sprinkle chicken with salt and pepper. Working in batches, cook chicken until golden brown, about 7 minutes per side. Transfer chicken to large plate. Add pancetta and next 6 ingredients to same pot. Cook until vegetables begin to brown and soften, stirring frequently, about 10 minutes. Add garlic; stir 1 minute. Add tomato paste; stir 2 minutes. Add flour; stir 1 minute. Add wine and simmer 1 minute. Drain beans. Add beans to pot; stir to combine. Add broth; season with salt and pepper. Place rosemary sprig and chicken atop bean mixture. Cover pot; transfer to oven. Braise until chicken and beans are very tender, about 1 hour. Transfer chicken to plate. Season beans with salt and pepper. Mix 2 tablespoons finely chopped rosemary, parsley, and lemon peel in small bowl. Divide beans among 6 shallow bowls. Top each with chicken. Sprinkle each with parsley mixture and serve.