Place ramen noodles, sesame seeds, almonds, and butter in a pie plate. Bake at 350 for 10-15 minutes or until lightly browned, stirring occasionally. Let cool.
Combine sugar, olive oil, soy sauce, vinegar, and seasoning packet in a small bowl and whisk till combined. Set aside, stirring occasionally till sugar is dissolved.
Chop cabbage and lettuce, place in a large serving bowl. Add green onions and cooked chicken.
Just before serving, stir in the dressing and the cooled ramen noodle mixture.
Notes
I don't always use all of the dressing, it depends on how much cabbage and lettuce I end up with.