Eating a whole foods, plant-based diet involves eliminating processed foods like oils, and most chips I've come across at the grocery store (even natural food stores) contain oil, even if they're labeled as baked. The one way to make sure you're not getting any added oils is to do it yourself and use a star ingredient that's as close to natural as possible and oil-free.
These chips couldn't be easier, and they're something I snack on quite a bit with homemade salsa or hummus.
I had to do some trial and error but found corn tortillas that are perfect for this and taste really good: the Sprouted Corn Tortillas made by Food For Life (the same company that makes Ezekiel bread). I did locate them at Green Planet Grocery store in the Cicero location, and at the Greenstar Coop in Ithaca at the west-end W. Buffalo St. location. They may be at other locations and stores, but these are just where I happened to see them in my travels. I did not find them at the Fayetteville Wegmans unfortunately.
Here's how you do it:
Thaw a package of the corn tortillas if frozen (the ones I've found are frozen).
Preheat oven to 350 F.
Place a piece of parchment paper on a baking sheet.
Cut each tortilla into triangles, strips, or whatever shape you like.
Place chips on parchment-lined baking sheet (as in picture at top) and bake for about 15 minutes. Ovens vary, so watch your chips carefully. Mine cooks them perfectly in 15 minutes but yours may be different. I burned a few chips until I learned how my oven worked with this.
Carefully remove the hot pan from the oven and likewise with the chips. Put them in a single layer on a cooling rack (I now just throw them into a large food storage container that's big enough so they can breathe and cool off before the next batch is tossed in). When cool, store in an airtight container. If desired, sprinkle with onion and garlic powder or a pinch of sea salt. The spices won't stick really well to the chips, but do impart some flavor.
***Do not put spices on the chips before you bake them...I learned this the hard way and burned spices are not very appealing.***
Enjoy with homemade pico de gallo, hummus, or straight up!