The other day I needed some tortilla chips for a dip, and didn't want to make a trip to the grocery store just for the one item. I happened to have corn tortillas in the refrigerator, so I looked up recipes on the web and made up a batch. With a couple of tweaks and another try tonight, here's what worked really well for me. These are MUCH better than store-bought chips, and also lower in fat/calories.
corn tortillas (I can get 8-9 tortillas on two cookie sheets)
spray olive oil
salt (or seasoned salt)
Preheat oven to 400 degrees.
Spread the tortillas out on one or more baking sheets and spray lightly with olive oil. Turn and spray the other side. Then put the tortillas in a stack and cut into eighths. Spread the pieces on one or more baking sheets, sprinkle lightly with salt (or seasoned salt) and put in oven. (You could also skip the salt.) Bake for 11-12 minutes, until crisp. No need to flip the chips over while baking. I did two baking sheets in the oven at once, and that worked fine.
(Addendum 6/15/16: The Simply Recipes site gives a method for making chips in the microwave, which would be a good option for a hot day when you don't want to turn on the oven. I haven't tried it, so can't recommend, but you can find the directions here; scroll down to the third method (after fried and baked).