I like all salads except rice salad. Rice is just wrong cold.
A leafy lettuce salad with cucumber, avocado spring onions and cruoutons and a parmesan dressing (think ceaser salad) would work well with smoked chicken
Diced tomato, cucumber, red onion and parsley is always nice
Or, how about a big platter with salad ingredients all around and the chicken on the top, like a salad nicouse, lettuce, tomato, cucumber, blanched and cooled french beans, sliced cooled cooked potato, sweet pepper, olives?