In a large skillet, heat the olive oil over medium heat. Add the diced chicken, chili powder, cumin, garlic powder, salt, and pepper. Cook for about 5-7 minutes, or until the chicken is cooked through and no longer pink. Remove from heat and set aside.
In the same skillet, add the corn and cook for 3-4 minutes until heated through. Remove from heat and set aside.
In a small bowl, mix together the mayonnaise, lime juice, smoked paprika, and half of the cotija cheese. Stir until well combined.
To assemble the bowls, divide the cooked rice among four bowls. Top each bowl with the cooked chicken, corn, and a drizzle of the mayonnaise mixture.
Sprinkle the remaining cotija cheese and chopped cilantro over the top. Add avocado slices and jalapeños if desired.
Serve immediately and enjoy your flavorful Street Corn Chicken Rice Bowl!