Dude Ranch Chicken

Ingredients: 2 1/2 cups cubed cooked chicken 2 cups shredded Cheddar cheese, divided 1 10 3/4 oz. can cream of mushroom soup 1 10 3/4 oz. can cream of celery soup 1 10 oz. can RoTel Diced Tomatoes and Green Chilies, undrained 1 4 OR 8 oz. can diced green chilies 3/4 cup sliced green onions 10 flour tortillas (8 inch), each cut into 6 triangular wedges

1 Tbsp sliced green onions for garnish