In 1-cup measuring cup, beat together chicken broth and tomato paste; pour around chicken in slow cooker. Cover; cook on Low heat setting 3 1/2 to 4 hours or until juice of chicken is clear when thickest pieces are cut to bone (at least 165°F), and vegetables are fork tender. Transfer chicken and vegetables to serving platter, discarding bay leaves. Top with cooked bacon. Spoon fat from cooking juices; serve with chicken. Garnish with chopped parsley; serve with mashed potatoes.