In a large skillet, heat the olive oil over medium heat. Add the diced chicken, chili powder, garlic powder, cumin, salt, and pepper. Cook for about 6-8 minutes, stirring occasionally, until the chicken is cooked through and no longer pink in the center.
While the chicken is cooking, prepare the street corn sauce. In a bowl, combine the corn, mayonnaise, sour cream, cotija cheese, cilantro, lime juice, and smoked paprika. Mix well until all ingredients are combined.
Once the chicken is cooked, remove it from the heat. In serving bowls, layer the cooked rice, followed by the chicken, and top with the street corn mixture.
Serve immediately, garnished with additional cilantro and lime wedges if desired.