01 - Bring a large pot of salted water to a boil. Cook the pasta according to package directions until al dente. Drain, rinse under cold water to halt cooking, and set aside to cool completely.
02 - If using fresh corn, grill or sear the ears on a hot skillet until lightly blackened, about 5–7 minutes, turning occasionally. Cut the kernels off the cobs. If using frozen corn, thaw first, then pan-sear briefly for a smoky char.
03 - In a large mixing bowl, combine the cooled pasta, charred corn kernels, halved cherry tomatoes, diced red onion, chopped cilantro, and jalapeño (if using). Toss gently to distribute evenly.
04 - In a separate small bowl, whisk together the mayonnaise, sour cream (or Greek yogurt), lime juice, smoked paprika, chili powder, kosher salt, and black pepper until smooth and well blended.
05 - Pour the prepared dressing over the pasta and vegetable mixture. Toss gently until everything is evenly coated.
06 - Fold in the crumbled cotija cheese, mixing gently so it disperses throughout the salad without breaking down completely.
07 - Transfer to a serving bowl. Top with additional chopped cilantro and arrange lime wedges around the edges. Serve chilled or at room temperature.