Season the chicken breast evenly with half of the chili powder, sea salt, and black pepper.
Heat the olive oil in a medium skillet over medium-high heat and cook the chicken until golden and cooked through, about 5-6 minutes per side.
Remove the chicken from the pan to rest, then add the sweet corn to the same skillet, cooking undisturbed for 3 minutes to achieve a dark char.
Steam the cauliflower rice in a separate pot or microwave until tender, then season lightly with a pinch of salt.
In a small mixing bowl, whisk together the Greek yogurt, lime juice, and the remaining chili powder to create a zesty crema.
Slice the chicken into bite-sized pieces and assemble the bowl by layering cauliflower rice, charred corn, sliced avocado, and chicken.
Drizzle the lime crema over the top and garnish with crumbled Cotija cheese and fresh cilantro.