2 cups diced or shredded cooked chicken
1/2 cup mayonnaise
1/4 cup celery, chopped fine
2 Tbsp chopped scallion OR red onion OR sweet onion
1 tsp dijon mustard
1/2 tsp seasoning salt
ground black pepper to taste
Place all ingredients in a bowl and toss well. Adjust salt and pepper to taste. Serve chilled.