Season the chicken with salt, pepper, garlic powder, and smoked paprika.
Grill or cook the chicken until fully cooked.
Let the chicken rest for 5 minutes.
Slice the chicken into bite-sized pieces.
Cook or grill the corn until lightly charred.
In a small bowl, whisk together mayonnaise, sour cream, lime juice, chili powder, smoked paprika, salt, and pepper.
In a large salad bowl, combine lettuce, corn, tomatoes, red onion, avocado, cilantro, and cotija cheese.
Add the sliced chicken.
Pour the dressing over the salad.
Toss gently until everything is evenly coated.
Serve immediately with fresh lime wedges.