Make the tomatillo salsa: Heat a griddle or skillet to medium-high and add a light drizzle of oil. Add tomatillos and jalapeños and cook until charred and softened, turning occasionally, about 8–10 minutes. During the last 2 minutes of cooking, add the garlic cloves and cover to steam. Then transfer charred vegetables to a blender. Add cilantro, lime juice, a pinch of salt, and a splash of water. Blend until smooth. Taste and adjust salt and lime juice as needed. Set aside.
Make the street corn: Heat about ½ tablespoon oil in a skillet or griddle over medium. Add the thawed corn and cook, stirring occasionally, until blistered and charred, about 5–7 minutes. While the corn is cooking, in a large bowl, combine mayonnaise, Tajín, cotija cheese, lime juice, and cilantro. Add the hot corn to the bowl and toss well to coat. Set aside.
Crisp the pulled pork: Reduce griddle or skillet to medium-low. Add a small drizzle of oil. Spread pulled pork in a single layer and cook undisturbed until the bottom edges are golden and crispy, about 3-4 minutes. Stir and cook for another 2 minutes. Remove from heat.
Fry the tortillas and build the tacos: Increase heat to medium or medium-high. Add a small amount of oil to the griddle or skillet. Lay a tortilla flat, add a small amount of cheese blend to one half, then top with a portion of the crispy pulled pork. Fold the tortilla over. Cook until the bottom is golden and crunchy, about 2 minutes, then flip and cook the other side for another 1–2 minutes until crunchy and the cheese is fully melted. Repeat with remaining tortillas.
Assemble and serve: Open the folded tacos and top with Mexican street corn and a generous spoonful of tomatillo salsa verde. Serve immediately.