Combine 5 cups of water and wild rice in a saucepan. Bring to a boil, reduce heat and simmer until all liquid has been absorbed; about 45 minutes. Allow wild rice to cool. Cook chicken until done. Allow chicken to cool; shred into small pieces. Combine wild rice, chicken, mayonnaise, salt and pepper; mix thoroughly and refrigerate. Peel apples and chop into small pieces; sprinkle with lemon juice. Toss apples into wild rice and chicken mixture. Place 1 tortilla on flat surface and cover with 1 lettuce leaf and ¼ cup of wild rice and chicken mixture. Roll tortilla tightly. Makes approximately 20 Chicken and Wild Rice Roll-Ups. Cut in half, thirds or quarters for appetizers. Note: To make this dish the night before, prepare and combine all ingredients except apple and lemon juice. Peel and chop apples in the morning, toss with chicken and wild rice mixture; roll into tortillas. Try chicken and wild rice mixture in a pita with sprouts or our other favorite ingredients.