1-Preheat oven to 175°C (350°F) and line: Preheat oven to 175°C (350°F) and line a baking sheet with parchment paper.
2-In a large bowl, mix shredded zucchini,: In a large bowl, mix shredded zucchini, almond flour, egg, optional Parmesan, and all spices. Ensure well combined until a sticky dough forms (about 2-3 minutes).
3-Transfer dough to the prepared baking sheet: Transfer dough to the prepared baking sheet and press evenly into a thin rectangle, about 0.5 cm thick. Use a rolling pin or your hands.
4-Use a sharp knife or pizza cutter: Use a sharp knife or pizza cutter to cut the dough into cracker-sized squares. Sprinkle with sesame seeds if desired.
5-Bake in the preheated oven for 20-25: Bake in the preheated oven for 20-25 minutes until the edges are golden brown and crispy.
6-Let the crackers cool on the sheet: Let the crackers cool on the sheet for a few minutes to firm up. For extra crispness, flip them over and leave in the turned-off oven for another 5-10 minutes before serving.