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