Toss the diced chicken with cumin, chili powder, garlic powder, salt, and black pepper until evenly coated.
Heat olive oil in a large skillet over medium-high heat. Add chicken and sauté for 8-10 minutes or until the internal temperature reaches 165°F (74°C).
In a large mixing bowl, fold the lime juice and chopped cilantro into the warm cooked rice.
Distribute the cilantro lime rice evenly among four serving bowls.
Top each bowl with a portion of the cooked chicken, black beans, and charred corn.
Garnish each bowl with fresh pico de gallo, avocado slices, and a dollop of sour cream.
Serve immediately with optional lime wedges on the side.