I know that each tortilla is 4 pro points as i bought them the other day.
I haven't gotten around to the rest of it though so can't be much more help, esp as I don't eat chicken! At least you know the veg will be free. If you find out that there are pro points in the BBQ mix, can I recommend getting your hands on Jamie Oliver's Fajita recipe from his Ministry of Food book. It's delicious and all the spices etc will be free. I'm sure he dumps about half a bottle of olive oil in there somewhere so as usual with Jamie, go easy there. You never need as much as he says!
I've just realised i haven't really answered your question at all but have waffled on and on...
The recipe is delicious tho!