Guy Fieri's revisiting fired-up faves packing a punch. First, a pizza joint in Boulder, Colorado, isn't holding back on heat or flavor with their spicy artisanal pies and a Rocky Mountain spin on the classic Italian sub. Then in Mesa, Arizona, a family-run Latin American comfort food destination keeps cranking out their tasty turnovers. Finally, a bomb barbecue place in Memphis, Tennessee, is still plating up smoked meats with secret spice and a serious bologna sandwich.