Prepare the Rice: Cook rice according to package instructions and set aside.
Cook the Chicken: In a skillet, heat a little oil over medium heat. Add diced chicken, season with salt, pepper, chili powder, and garlic powder, and cook until golden and cooked through (about 6-8 minutes).
Mix the Street Corn: In a bowl, combine corn, mayonnaise, lime juice, and cotija cheese. Stir until well mixed.
Assemble the Bowl: In serving bowls, layer the cooked rice, topped with the seasoned chicken and the street corn mixture. Garnish with fresh cilantro and jalapeños if desired.
Serve: Enjoy this bowl warm, and feel free to serve with additional lime wedges for an extra zing.