Photo: Leigh Beisch; Styling: Sara Slavin
1. Combine first 5 ingredients (through black pepper) in a large bowl and set aside. Coat chicken with breadcrumbs.
2. Heat oil in a large nonstick skillet over medium-high heat. Add chicken and cook 2 minutes per side or until golden brown. Remove to a plate. Add squash, onion, and bell pepper to pan; reduce to medium heat and cook 6 minutes (until squash is lightly browned). Stir occasionally. Return chicken to pan.
3. Spoon tomato mixture over chicken. Reduce heat, cover, and simmer 15 minutes. Sprinkle with parsley.