Marinate the Chicken : In a bowl, combine lime juice, avocado oil, chili powder, garlic powder, salt, and pepper. Add the chicken thighs, tossing to coat evenly. Let marinate for 10-15 minutes while preparing other ingredients.
Cook the Chicken : Heat a large skillet over medium-high heat. Add the marinated chicken and cook for 4-5 minutes per side, or until the chicken is cooked through and golden brown. Remove from heat and let rest for a few minutes before slicing into strips.
Prepare the Corn : If using frozen corn, thaw and dry it well. Grill the corn kernels in a skillet or on a grill until lightly charred, or use them as-is for convenience.
Combine Ingredients : In a bowl, mix the grilled corn with red onion, sour cream, mayonnaise, Cotija cheese, and chili powder. Season with salt and pepper to taste. Squeeze a little lime juice into the mixture for extra zing.
Prepare the Rice : Divide the cooked rice evenly into serving bowls.
Top with Chicken and Corn : Arrange the sliced chicken thighs over the rice, then generously spoon the street corn topping over the chicken.
Garnish and Serve : Garnish with fresh cilantro and additional Cotija cheese. Serve with lime wedges on the side for an extra burst of flavor.