Cook the rice according to package directions and set aside, keeping it warm.
In a mixing bowl, combine the mayonnaise, lime juice, chili powder, cumin, garlic powder, smoked paprika, salt, and pepper. Mix until smooth.
In a large skillet, heat a drizzle of oil over medium heat. Add the diced chicken and season with salt, pepper, and a pinch of chili powder. Cook for about 6-8 minutes or until the chicken is cooked through and golden brown.
Add the corn to the skillet and cook for an additional 3-5 minutes until heated through.
Remove the skillet from the heat and mix the mayonnaise mixture into the chicken and corn until evenly coated.
To assemble, place a serving of rice in a bowl, top with the chicken and corn mixture, and garnish with cotija cheese, fresh cilantro, and sliced avocado.
Serve with lime wedges on the side for an extra burst of flavor.