In a Dutch oven, combine the leftover pulled pork, chopped chipotle peppers with their adobo sauce, and chicken broth. Stir well to combine. Bring to a low simmer over medium heat and cook uncovered for about 45 minutes, stirring occasionally, until the sauce has thickened and the smoky, spicy flavors have fully developed and married into the pork.
Heat a skillet over medium heat and lightly spray or drizzle with oil. Place a flour tortilla in the skillet and warm on one side until it starts to bubble and develop light golden spots.
Add a layer of shredded cheese and a generous spoonful or two of the chipotle pulled pork onto one half of the tortilla. Fold the tortilla over the filling and press gently with a spatula.
Toast each side until golden and crispy and the cheese is fully melted. Repeat with the remaining tortillas and filling.
Serve immediately with a squeeze of fresh lime, a drizzle of crema, and your preferred toppings.