Step 1: Cook Pasta - Bring a large pot of salted water to a rolling boil. Add rotini or penne pasta, cooking for 7 to 9 minutes until al dente. Drain and rinse under cold water.

Step 2: Prepare Corn - Grill fresh corn on medium heat for about 10 minutes until charred, then cut the kernels off the cob. For frozen or canned corn, thaw or drain before use.

Step 3: Make Dressing - In a mixing bowl, combine mayonnaise, sour cream, lime juice, chili powder, smoked paprika, garlic powder, salt, and pepper. Whisk until smooth.

Step 4: Combine Ingredients - In a large bowl, combine cooled pasta, prepared corn, halved cherry tomatoes, chopped red onion, cilantro, and cotija cheese. Drizzle with dressing and toss until evenly coated.

Step 5: Chill - Cover and refrigerate for at least 30 minutes before serving.