Cut each bagel in half, and then carefully slice the C-shaped halves into thin rounds about 1/8-inch thick. Place the slices in a single layer on a baking sheet lined with parchment.
Drizzle olive oil evenly over the bagel slices; then gently toss to coat. Sprinkle salt and Italian seasoning on top.
Bake in the preheated oven for about 15-18 minutes, stirring every 5 minutes until the chips turn golden and crisp. Let cool completely before serving.