Marinate the chicken: In a bowl, whisk lime zest, lime juice, olive oil, garlic, cumin, chili powder, smoked paprika, salt, and pepper. Add chicken and toss to coat.
Marinate 20–30 minutes at room temperature, or up to 4 hours in the fridge.
Cook your base: Prepare rice or quinoa according to package directions. For extra flavor, stir in a squeeze of lime juice, a pinch of salt, and some chopped cilantro after cooking.
Make the avocado-lime drizzle: Blend avocado, yogurt, lime juice, olive oil, garlic, water, salt, and pepper until smooth. Adjust water to reach a pourable consistency.
Taste and add more lime or salt if needed.
Sear the chicken: Heat a large skillet over medium-high. Add a drizzle of oil. Cook chicken in a single layer, undisturbed, for 3–4 minutes to get color, then flip and cook another 3–4 minutes until cooked through.
Work in batches if needed so it browns, not steams.
Prep the toppings: Dice avocado, slice tomatoes, rinse beans, and prep corn, onion, jalapeño, and cilantro. Keep everything bite-size for easy eating.
Assemble the bowls: Add a scoop of rice or quinoa to each bowl. Top with chicken, black beans, corn, tomatoes, red onion, and avocado.
Drizzle with the avocado-lime sauce and scatter cilantro on top. Serve with lime wedges.
Adjust to taste: Finish with a pinch of salt, an extra squeeze of lime, or a few jalapeño slices for heat.