Cook macaroni according to package instructions until al dente, drain, rinse under cold water, and set aside.
Whisk together mayonnaise, Greek yogurt, lime juice, chili powder, cumin, smoked paprika, salt, and pepper until smooth.
Dice bell peppers, red onion, cherry tomatoes, and jalapeños (if using). Drain and rinse corn if canned.
In a large bowl, combine pasta, vegetables, corn, and shredded cheese. Pour dressing over and toss until evenly coated.
Cover and refrigerate for 1–2 hours to let flavors meld.
Before serving, toss gently and garnish with cilantro, avocado, or crumbled cheese.