Warm the heavy cream, almond milk, orange zest, and cardamom over medium-low heat until steaming. Remove from the heat and let the flavors infuse for 10 minutes.
Blend the infused mixture with the powdered allulose, olive oil, orange extract, xanthan gum, and sea salt until fully emulsified.
Refrigerate the ice cream mixture for at least 3 hours or until thoroughly chilled.
Melt the dark chocolate with the coconut oil in short intervals, stirring until smooth. Let it cool until barely warm but still fluid.
Churn the orange mixture in an ice cream maker according to the manufacturer's directions. Drizzle in the chocolate during the final minute to create thin flakes.
Transfer the ice cream to a freezer-safe container and freeze for 3 to 4 hours before serving.