A good panful will still give you plenty to freeze, unless you're feeding a very large group - each tortilla only needs about 2 heaped tablespoons of chilli (about 50ml); for nachos, you need about 250ml of chilli per person. This recipe makes about 1.5 litres of chilli - that's about 30 tortillas, or nachos for 6. Or, nachos for 4 and then 10 tortillas, which would feed 4 nicely if 2 of them are very hungry, or feed 10 if they're all me and only want one tortilla each. You get the idea - whichever which way, you probably have enough to freeze some as well, and chilli freezes very happily and is even nicer the next time.