The best thing to do is use the complete food guide, Dotti's site or just guestimate to the best of your ability and just break down all the ingredients....
Tortilla (They can be anywhere from 2-6 points usually when eating out)
Flour Tortilla, 6 1/2" diameter (100 cal/3 g fat/15 g carbs) 2.5
Flour Tortilla, 8" diameter (150 cal/5 g fat/22 g carbs) 3.5
Flour Tortilla, 10" diameter (250 cal/8 g fat/32 g carbs) 6
Chicken is 1 point per oz, so guestimate how much they used. To fill a tortilla it's probably 2 or 3 oz, but it depends on how big it was and how much they stuffed it. It could easily be more.
cheese-hard or semisoft - dairy or soy (Regular)- 1"cube, 4 Tbsp shredded, 3 Tbs grated (1oz) - 3 points
So if they used a large tortilla, with 3 oz chicken and 1 oz of cheese with lettuce.....
I'll edit later to add dressing and finish above. I just realized its after 12pm and I have to be somewhere at 1pm.