Prepare the Oven and Tray
Preheat the oven to 160°C (320°F) conventional, without fan.
Line a baking tray with parchment paper.
I use a tray measuring approximately 39 × 26 cm inside the top rim, with a 37 × 24 cm baking base.
Lightly Whisk the Egg White
In a mixing bowl, briefly whisk the egg white to loosen it.
Do not whip it into peaks.
Add the Sweetener and Flavorings
Add the sweetener, orange zest, lemon zest, vanilla extract, almond extract, orange bitters, and salt.
Mix until well combined.
Fold in the Almonds and Cacao Nibs
Add the sliced almonds and cacao nibs.
Gently fold until evenly coated, then add the melted butter and mix thoroughly without breaking up the almond slices.
Spread into a Thin Sheet
Transfer the mixture to the prepared tray.
Spread into a very thin, even layer, bringing the almond slices together without leaving large gaps or thick patches.
Bake Until Golden
Bake for 10 minutes, rotate the tray, then bake for another 8–10 minutes, or until evenly golden and toasted.
Watch closely toward the end.
The crisps will firm further as they cool.
Cut While Warm
Remove from the oven and let rest for approximately 5 minutes.
Carefully cut into 16 large or 20 medium pieces while the sheet is still warm and slightly flexible.
Cool Completely
Leave on the tray until completely cool and crisp.
Handle gently to avoid breaking the pieces.
Drizzle with Chocolate
Drizzle the melted sugar-free dark chocolate over the cooled crisps in thin lines.
Set and Enjoy
Refrigerate for approximately 10 minutes, or until the chocolate is firm.
Enjoy or transfer to an airtight container.