Season the chicken breast with chili powder, paprika, garlic powder, salt, and pepper, then grill until fully cooked.
Slice the cooked chicken into strips.
Wash and chop the lettuce and prepare all the vegetables.
Arrange the lettuce as the base in a large serving bowl.
Add the grilled chicken, avocado, black beans, corn, cherry tomatoes, and sliced jalapeños.
Drizzle with a lime and olive oil dressing.
Toss gently before serving or enjoy with the ingredients arranged separately.
Garnish with fresh cilantro if desired and serve immediately.