In a bowl, mix the corn, mayonnaise, sour cream, chili powder, garlic powder, smoked paprika, and lime juice.
Season with salt and pepper, then stir in the cotija cheese and cilantro.
Place the cooked rice into serving bowls and top with the grilled sliced chicken.
Spoon the creamy street corn mixture over the chicken and rice.
Garnish with extra cilantro and cotija cheese if desired.
Serve warm and enjoy!