01 - Rinse rice under cold water until water runs clear. Combine rice, water, and salt in a saucepan. Bring to a boil, reduce heat to low, cover, and simmer for 15 minutes. Remove from heat and let steam, covered, for 5 minutes. Fluff with a fork.
02 - Combine olive oil, chili powder, smoked paprika, cumin, garlic powder, salt, pepper, and lime juice in a bowl. Add chicken breasts and coat evenly. Let marinate for at least 10 minutes.
03 - Heat grill pan or skillet over medium-high heat. Grill chicken for 5–7 minutes per side, or until cooked through and juices run clear. Rest for 5 minutes, then slice.
04 - Heat olive oil in a skillet over medium-high heat. Add corn kernels and sauté for 3–5 minutes until slightly charred. Stir in smoked paprika, chili powder, and salt. Remove from heat.
05 - Whisk together sour cream, mayonnaise, lime juice, hot sauce (if using), and salt until smooth.
06 - Divide rice among four bowls. Top each with sliced chicken, street corn, a drizzle of crema, crumbled cheese, cilantro, jalapeño slices (if desired), and a lime wedge.