Preheat oven to 375°F (190°C) and lightly grease a 9x13 inch baking dish.
In a large mixing bowl, blend softened cream cheese, sour cream, mayonnaise, and lime juice until smooth.
Mix in chili powder, smoked paprika, cumin, salt, and black pepper, then add diced red onion, jalapeño, and half the chopped cilantro.
Fold in shredded chicken and thawed fire-roasted corn, coating everything evenly with the creamy sauce.
Spread mixture evenly into the prepared baking dish.
Sprinkle shredded Monterey Jack cheese and crumbled cotija cheese evenly over the top.
Bake for 20-25 minutes until hot, bubbly, and cheeses are melted and lightly browned.
Remove from oven and let rest 5 minutes before garnishing with Tajin seasoning, additional cilantro, and cotija cheese.