In a medium bowl, combine the mayonnaise, sour cream, lime juice, and half of the cotija cheese. Mix well and set aside.
Season the chicken breasts with olive oil, chili powder, garlic powder, cumin, salt, and pepper.
Heat a skillet over medium-high heat. Add the seasoned chicken and cook for about 6-7 minutes per side, or until the internal temperature reaches 165°F. Remove from heat and let rest for 5 minutes before slicing.
In the same skillet, add the corn and sauté for about 3-4 minutes until heated through and slightly charred.
To assemble the bowls, place 1 cup of cooked rice in each bowl. Top with sliced chicken, sautéed corn, and a generous drizzle of the creamy sauce.
Sprinkle the remaining cotija cheese and chopped cilantro over the top. Add avocado slices and serve with lime wedges on the side.