In a small mixing bowl, whisk together the mayonnaise, sour cream, 1 tablespoon of lime juice, and 1 tablespoon of cilantro to create the crema dressing.
Season the diced chicken with chili powder, cumin, smoked paprika, salt, and pepper.
Heat 1 tablespoon of olive oil in a heavy-bottomed skillet over medium-high heat. Sear chicken until the internal temperature reaches 165°F (74°C), approximately 8 to 10 minutes. Remove and set aside.
Wipe the skillet and add the remaining tablespoon of oil. Add the corn kernels and cook undisturbed for 3 minutes to achieve a char. Stir and cook for an additional 2 minutes.
In a large bowl, toss the charred corn with the remaining lime juice and half of the cotija cheese.
Assemble bowls by portioning 0.5 cups of rice into four containers. Top each with equal portions of spiced chicken and the charred corn mixture.
Drizzle the prepared crema dressing over each bowl.
Garnish with the remaining cotija cheese, minced cilantro, and jalapeño slices before serving.