01 - Bring a large pot of salted water to a boil. Cook the pasta according to package directions until al dente. Drain in a colander and rinse under cold water to halt the cooking process. Set aside to cool completely.
02 - Heat a large skillet or grill pan over medium-high heat. Spread the corn kernels in an even single layer and let them cook undisturbed for 3 to 4 minutes until lightly charred. Stir and continue cooking for another 2 minutes. Remove from heat and allow to cool.
03 - In a large salad bowl, toss together the cooled pasta, charred corn, quartered cherry tomatoes, diced red onion, chopped jalapeño (if using), and cilantro.
04 - In a small mixing bowl, whisk together the mayonnaise, sour cream, fresh lime juice, chili powder, smoked paprika, garlic powder, salt, and black pepper until smooth and well combined.
05 - Pour the dressing over the salad ingredients and gently toss until everything is evenly coated.
06 - Fold in the crumbled cotija cheese. Taste and adjust seasoning with additional salt, pepper, or lime juice as needed.
07 - Transfer to a serving dish and top with additional cilantro and crumbled cotija cheese if desired. Serve chilled or at room temperature.