Heat olive oil in a large skillet over medium-high heat.
Season chicken pieces with chili powder, cumin, garlic powder, salt, and pepper.
Add chicken to the skillet and cook for 8 to 10 minutes until golden brown and cooked through to 165 degrees Fahrenheit.
In a small mixing bowl, whisk together mayonnaise and sour cream until smooth.
Divide the cooked rice evenly among four bowls.
Top each bowl with equal portions of cooked chicken and charred corn.
Drizzle the mayonnaise and sour cream mixture over the corn and chicken.
Garnish each bowl with crumbled cotija cheese, chopped cilantro, and a lime wedge before serving.