Cook the pasta
Bring a large pot of salted water to a boil.
Cook the pasta until al dente according to the package directions. Drain, then rinse under cold water to cool it down and stop the cooking.
Prepare the corn
If using grilled corn, cut the kernels from the cob once cool enough to handle.
If using frozen corn, thaw it completely and pat it dry. If using canned corn, drain and rinse well before adding it to the salad.
Make the creamy dressing
In a small bowl, whisk together the Greek yogurt, mayonnaise, lime juice, chili powder, smoked paprika, garlic powder, cumin, salt, and black pepper.
Taste and adjust with more lime, salt, or chili powder if needed.
Combine the salad
Add the cooled pasta, corn, cilantro, cotija cheese, red onion, green onion, jalapeño, and tomatoes to a large mixing bowl.
Pour the dressing over the top.
Toss gently
Toss until the pasta and vegetables are evenly coated.
Be gentle so the cheese stays crumbly and the vegetables keep their texture.
Chill before serving
Cover and refrigerate for at least 30 minutes if you have time.
This helps the flavors settle into the pasta and makes the salad taste even better.
Finish and serve
Before serving, give the salad a gentle stir.
Top with extra cotija, cilantro, lime juice, and a light sprinkle of chili powder.