In a medium bowl, combine the sliced strawberries with a tablespoon of powdered sugar. Toss gently and set aside to macerate for about 10-15 minutes.
In a large bowl, add the heavy whipping cream, 1/2 cup of powdered sugar, vanilla extract, and lemon zest. Using an electric mixer, whip the mixture on high speed until stiff peaks form.
On a serving platter, lay down a single layer of graham crackers, covering the bottom completely.
Spread a layer of lemon curd over the graham crackers, followed by a layer of the whipped cream mixture.
Arrange half of the macerated strawberries over the whipped cream layer. Repeat the layering process: another layer of graham crackers, lemon curd, whipped cream, and the remaining strawberries.
Top with a final layer of whipped cream, smoothing it out to your desired look.
Cover the cake with plastic wrap and refrigerate for at least 4 hours, or overnight if possible.
Before serving, garnish with fresh mint leaves and a sprinkle of lemon zest.