Preheat oven to 350°F.
Slice bagels into rounds ⅛" or thinner. Arrange on a sheet pan in an even layer.
Use a pastry brush to lightly brush or dab the top of each bagel slice with olive oil. Don't worry about perfect coverage, just a few dabs of oil per slice is fine.
Sprinkle the bagel chips with salt and any other seasonings you like.
Bake for 15-20 minutes, stirring every 5 minutes until the chips are toasted and crisp. Thinner chips will crisp up faster — remove any chips from the pan early if they are fully browned to avoid burning while the remaining chips bake.
Let cool completely. Store in an airtight container for up to a month.
