Fruited Chicken Salad Sandwhiches from The Bake-Off Flunkie

10 large skinless, boneless chicken breasts, cooked and cut into small cubes
1 cup diced celery
2 cups halved red grapes (seedless)
1 large can Mandarin oranges, well drained
1 small can crushed pineapple, well drained
1/4 cup thinly sliced green onion
1/4 cup slivered almonds
1 cup mayo
1 tablespoon sugar
1 teaspoon kosher salt
freshly ground black pepper
12-16 large croissants, sliced horizontally

Combine everything (except croissants) in a very large bowl and mix gently until thoroughly combined. Serve immediately or after chilling it in the fridge. To serve, spoon filling into sliced croissants and enjoy!

Makes about 4 quarts salad (maybe a skosh more), or enough filling for 12-16 large croissants.