Step 1: Prepare the Chicken

1. Season the Chicken: In a small bowl, mix the chili powder, smoked paprika, cumin, garlic powder, onion powder, cayenne pepper, salt, and black pepper. Rub this spice mixture evenly over the chicken.
2. Cook the Chicken:
   • Grilling Option: Preheat a grill to medium-high heat. Brush the grill grates with olive oil and cook the chicken for 5-6 minutes per side, or until the internal temperature reaches 165°F (74°C).
   • Stovetop Option: Heat olive oil in a large skillet over medium heat. Cook the chicken for 4-5 minutes per side until fully cooked.
3. Rest the Chicken: Transfer the cooked chicken to a cutting board and let it rest for 5 minutes before slicing or shredding.

Step 2: Cook the Rice

1. Toast the Rice (Optional): In a medium saucepan, heat 1 tablespoon of olive oil over medium heat. Add the rice and toast for 2-3 minutes until lightly golden, stirring frequently.
2. Cook the Rice: Add the chicken or vegetable broth, cumin, chili powder, and salt. Bring to a boil, then reduce the heat to low, cover, and simmer for 15-18 minutes, or until the rice is tender and the liquid is absorbed. Fluff with a fork before serving.

Step 3: Prepare the Street Corn Topping

1. Cook the Corn:
   • Fresh Corn: Grill or sauté the kernels until lightly charred.
   • Frozen Corn: Thaw and sauté over medium-high heat for 4-5 minutes until heated through and slightly golden.
2. Mix the Sauce: In a bowl, combine the mayonnaise, sour cream, chili powder, smoked paprika, lime juice, and cotija cheese. Stir in the cooked corn and chopped cilantro until well combined.

Step 4: Make the Lime Crema

1. In a small bowl, whisk together the sour cream, lime juice, lime zest, and salt. Adjust the lime juice to taste and set aside.

Step 5: Assemble the Bowls

1. Layer the Rice: Divide the cooked rice among four bowls.
2. Add the Chicken: Slice or shred the cooked chicken and arrange it on top of the rice.
3. Top with Corn: Spoon the street corn mixture over the chicken.
4. Drizzle with Crema: Finish each bowl with a generous drizzle of lime crema.
5. Garnish: Add optional toppings such as avocado, jalapeños, extra cotija cheese, cilantro, or lime wedges.