2 c. chopped cooked chicken
1/2 c. (or more) Miracle Whip
1/4 c. chopped pitted ripe olives
1/2 c. shredded sharp cheddar cheese
1/4 c. chopped green pepper
1/4 c. chopped onion
6 croissants, split
Lettuce

Combine first six ingredients. Spread inside croissants with lettuce.