Combine chicken, tomatoes, broth, onion, bell pepper, garlic, Italian seasoning, pepper, salt, crushed red pepper and bay leaf in a 4-quart slow cooker. Cover and cook on High until the chicken is tender and an instant-read thermometer inserted into the thickest part of the chicken registers 165 degrees F, about 3 hours. Remove and discard the bay leaf. Transfer the chicken to a plate; let rest for 10 minutes.
Meanwhile, stir pasta into the mixture in the slow cooker; cover and cook on High until the pasta is tender, about 30 minutes.
Coarsely shred the chicken and stir it back into the soup, along with basil and parsley. Ladle the soup evenly into 6 bowls; sprinkle with Parmesan and garnish with parsley, if desired.
Melt butter in a large pot over medium-high heat. Add leek, carrots and celery; cook, stirring occasionally, until softened and translucent, 6 to 8 minutes. Reduce heat to medium, add garlic and flour and cook, stirring constantly, until the garlic is fragrant and the flour has toasted, about 1 minute. Slowly add broth, stirring constantly. Add milk, pepper and salt and bring to a simmer (do not boil) over medium-high heat, stirring often and scraping the bottom of the pot to release any browned bits.
Reduce heat to medium to maintain a low simmer; add broccoli florets. Cook, stirring occasionally, until the broccoli is tender, about 8 minutes, adding chicken during the last 2 minutes of cooking. Remove from heat and stir in lemon juice. Serve immediately.
12lbroasted chickenskin discarded, meat removed from bones and shredded (4 cups)
Heat oil in a Dutch oven over medium-high heat. Add leeks and cook, stirring often, until soft, about 3 minutes. Stir in sage and continue cooking until aromatic, about 30 seconds. Stir in broth and water, increase heat to high, cover and bring to a boil. Add beans and chicken and cook, uncovered, stirring occasionally, until heated through, about 3 minutes. Serve hot.