Luscious Chicken Casserole

INGREDIENTS

• 1 tablespoon vegetable oil
• 1 1/2 pounds skinless, boneless chicken breast halves - cubed
• 1 cup light mayonnaise
• 1 (8 ounce) can water chestnuts, drained and chopped
• 1 (2 ounce) jar pimento peppers, drained and chopped
• 1/2 cup sliced almonds
• 1 1/2 teaspoons celery seed
• 2 tablespoons lemon juice
• garlic salt to taste
• 1 cup shredded Cheddar cheese
• 1 (2.8 ounce) can French-fried onion rings