Chicken Salad with Curry

On our vacation to Wyoming, we ate at a lovely cafe called "Lollipops". It was so good that we actually ended up eating there on three different occasions. And on each of those three occasions, Joe and I both ordered the Chicken Salad with Curry. It was that good! Naturally, I had to come up with my own copy cat recipe.  Here it is~
Chicken Salad with Curry
3 c. chicken, cooked and cubed
1/3 c. walnuts, chopped
1/2 c. celery, diced
1/3 c. onion, finely diced
1/2 t. onion salt
1/2 t. garlic powder
3/4 c. mayo (I like the olive oil mayo)
Curry powder for sprinkling
4 large croissants
4 romaine leaves
Combine chicken, nuts, celery, onion, onion salt, garlic powder and mayo in bowl. Mix well. Refrigerate at least 30 minutes before serving. To serve, generously fill croissants with chicken mixture, sprinkle with curry powder and top with one romaine leaf.