Cut tortillas into six triangles each using kitchen shears, pizza cutter or chef's knife. Spread into a single layer on a large cookie sheet (use more sheets if needed to fit single layers).
Spray triangles with olive oil - only the top side. Don't worry too much about perfection, but try to make sure every triangle has some oil on it. Sprinkle with salt.
Bake for 4 minutes. Remove pan and shake a bit to move chips around (or use a spatula) and return to oven for 2-3 more minutes, being careful not to burn them. Note: The shaking of the chips is to make sure the chips on the edges of the pan don't burn first - not to turn the chips. The chips will cook without turning, so don't waste time trying to turn each chip - but do make sure they stay in a single layer.If you do have some chips on the edge that are browning quicker, you can remove them and continue baking the rest.
Remove from oven and cool (they will crisp a bit more as they cool). Repeat with any additional cookie sheets, as needed. Add more salt if desired and serve immediately.*
Notes
*Homemade baked chips don't last as long as commercial, so it's best to bake only what you will eat in a day or two. Store uneaten chips in an airtight container.Note: nutrition calculations done with about 2 teaspoons of oil sprayed onto 12 tortillas.