Preheat the oven to 275-degrees F.

Line a baking sheet with parchment paper.

Wash the lemons.

Use the small side of a box grater, or a micro plane to zest the lemons. Be sure to only get the yellow part and not the white pith.

Spread the lemon zest out in a single layer on the prepared baking sheet.

Bake for 25-30 minutes until the lemon zest is dried out.

Remove from the oven and allow the zest to cool.

Using the parchment paper, transfer the dried zest to a spice grinder, coffee grinder, or food processor. (You can also use a mortar and pestle).

Grind the zest.

Add the lemon zest to the bowl along with the black pepper, sea salt, and garlic powder.

Stir to combine.