Place 1/4 cup of the heavy cream and all the chocolate chips in a bowl and microwave in 30-second bursts, stirring between each interval until the chocolate is completely melted. Set aside to cool to room temperature.

In a large mixing bowl, beat the remaining heavy cream with an electric mixer on high speed until soft peaks form.

Add the vanilla extract and orange zest, then sprinkle the Keto Chow over the whipped cream and beat on medium speed until fluffy and stiff.

Add the cooled chocolate mixture to the bowl and beat on medium speed until combined.

Spoon the mousse into four dessert dishes, cover with plastic wrap, and refrigerate for at least one hour. Garnish with whipped cream and sprinkling of chocolate chips if desired. Keep refrigerated for up to three days.