4. Heat a large cast-iron or nonstick skillet over medium heat until hot. Add oil, bacon and onion. Cook, stirring occasionally, until onion is golden, about 6 minutes. Add squash pieces. Cook, stirring often, until edges start to turn golden, about 5 minutes. Stir in sweet potato, garlic, chile and thyme. Season with salt and pepper. Cook over medium high-heat, stirring once or twice, until vegetables start to get crispy, about 5 minutes. Serve hot, sprinkled with herbs. Pass hot sauce.