For best crunch, use thin, evenly sliced pepperoni and avoid overlapping on the pan or rack. A wire rack helps the fat drip away and allows hot air to circulate, giving the chips a more even, shatteringly crisp texture. Every oven runs slightly differently, so start checking a few minutes early the first time you make these to prevent burning, especially around the edges. The chips will continue to crisp as they cool, so pull them from the oven as soon as most visible bubbling subsides. Store fully cooled chips in an airtight container at room temperature for up to 5 days, adding a paper towel to absorb moisture in humid climates, and re-crisp in a 350°F oven or air fryer for a few minutes if needed. Pair with keto-friendly dips like guacamole, ranch, or spinach dip, or crumble over salads, soups, and casseroles for an easy low carb crunch.