In a large pan over medium heat, stir together cream of chicken soup and broth. Stir in chicken, water chestnuts, lemon juice and mayonnaise. Stir in celery, onion salt and rice. Combine well, then pour into a casserole dish.
Melt butter in a skillet over medium heat. Pour in crushed crackers and stir to coat with butter. Pour crackers over the top of casserole. Then sprinkle almonds and shredded cheese over the top.
Bake in oven until cheese is melted; about 30 minutes.