In a bowl, combine chicken thighs with olive oil, chili powder, cumin, garlic powder, smoked paprika, salt, and pepper. Toss to coat evenly. Let marinate for at least 15 minutes, or up to 2 hours in the refrigerator.
While the chicken marinates, prepare the street corn salsa. In a medium bowl, combine thawed corn, mayonnaise, crumbled cotija cheese, lime juice, chopped cilantro, and a pinch of chili powder. Season with salt to taste. Stir well to combine and set aside.
Preheat your grill or a grill pan to medium-high heat. Grill the marinated chicken thighs for 5-7 minutes per side, or until cooked through and no longer pink in the center. Let rest for 5 minutes before slicing or dicing.
To assemble the bowls, divide the cooked rice among four bowls. Top with the grilled chicken, a generous portion of the street corn salsa, black beans, diced avocado, and chopped red onion.
Garnish with extra cilantro, a sprinkle of chili powder, and serve immediately with lime wedges on the side.
Notes
This recipe is easily adaptable. Feel free to add other vegetables like bell peppers or jalapeños to the salsa. For a spicier kick, add a pinch of cayenne pepper to the chicken marinade.