Season the Chicken: In a small bowl, combine chili powder, smoked paprika, garlic powder, cumin, salt, and black pepper. Rub the chicken with olive oil and coat evenly with the seasoning mixture.
Cook the Chicken: Heat a large skillet over medium-high heat. Cook the chicken for 5–7 minutes per side until golden brown and the internal temperature reaches 165°F (74°C). Remove from heat and let rest for 5 minutes before slicing.
Char the Corn: Add the corn to a dry skillet over medium-high heat. Cook for 5–6 minutes, stirring occasionally, until lightly charred. Transfer to a bowl and allow to cool slightly.
Make the Street Corn Mixture: Add mayonnaise, sour cream, cotija cheese, lime juice, chili powder, garlic powder, and salt to the corn. Mix well until creamy and fully combined.
Prepare the Rice: Combine the cooked rice with fresh lime juice and chopped cilantro. Stir until evenly mixed.
Assemble the Bowls: Divide the cilantro lime rice among four serving bowls. Top with sliced chicken and a generous spoonful of the street corn mixture.
Add Garnishes: Finish with avocado, extra cotija cheese, cilantro, jalapeños, tomatoes, and lime wedges if desired.
Serve: Serve immediately and enjoy this delicious street corn chicken rice bowl while warm.