In a large casserole, cook the bacon over moderate heat, stirring often, until lightly browned, about 7 minutes. Using a slotted spoon, transfer the bacon to a small bowl. Season the chicken with salt and pepper. Add the chicken to the casserole in batches and cook until browned all over. Transfer the chicken to a platter. Add the reserved vegetables to the casserole and cook, stirring, until lightly browned, about 5 minutes.