01 - Bring a large pot of salted water to a boil. Cook the pasta according to package directions until al dente. Drain and rinse under cold water to stop the cooking process and cool completely. Set aside.
02 - Heat a large dry skillet over high heat. Spread the corn kernels in a single layer and cook without stirring for 2–4 minutes until charred spots form. Stir once and char the other side for about 2 minutes. Remove from heat and let cool.
03 - In a large mixing bowl, whisk together the mayonnaise, sour cream, lime juice, minced garlic, chili powder, smoked paprika, kosher salt, and black pepper until smooth and well combined.
04 - Add the cooled pasta, charred corn, diced red onion, jalapeño, and chopped cilantro to the dressing. Toss gently until all ingredients are evenly coated.
05 - Gently fold the crumbled cotija cheese into the salad, distributing it throughout without breaking it down too much.
06 - Taste the salad and adjust with additional salt or lime juice as needed to balance the flavors.
07 - Transfer to a serving platter or bowl. Top with extra crumbled cotija cheese, fresh cilantro, and a generous sprinkle of chili powder or Tajín. Serve immediately or refrigerate for up to 6 hours, tossing gently before serving.