01 - Preheat grill or grill pan to medium-high heat.
02 - Coat chicken breasts with olive oil, chili powder, paprika, garlic powder, cumin, salt, and black pepper, ensuring even coverage.
03 - Place chicken on the preheated grill and cook for 6 to 8 minutes per side until cooked through and juices run clear. Let rest for 5 minutes before slicing.
04 - Heat a skillet over medium-high heat. Add corn kernels and cook, stirring occasionally, until lightly charred, about 4 to 5 minutes.
05 - Combine mayonnaise, sour cream, cotija cheese, smoked paprika, chili powder, cilantro, lime juice, salt, and pepper in a bowl. Stir in the charred corn until well coated.
06 - Divide cooked rice among four bowls. Top each with sliced chicken, street corn mixture, red onion, jalapeño, extra cilantro, and lime wedges.
07 - Serve immediately while chicken and corn are still warm.