Place cut fruit in a large bowl and sprinkle over the lemon juice, toss to distribute.
In a medium bowl, measure the sugar and corn starch and use a fork to blend.
Sprinkle sugar/cornstarch mix on top of the fruit and toss to evenly distribute. Set aside for about 15 minutes.
Remove dough from the refrigerator and roll it to 12-14" circle , about 1/3" thick. Use a knife to trim uneven edges.
Place the dough on a cookie pan lined with parchment paper.
Brush the center of the dough (about 2-3" from the edges) with egg and evenly spread the almond flour on top. Make sure not to leave some bare dough that can be folded on top of the fruits)
Evenly spread the fruit on top of the almond flour and pour over any access liquids.
Gently fold the bare edges on top of the fruits. Brush with egg wash and place in the refrigerator for about 45 minutes.
Preheat oven to 425F and place an oven rack at the bottom shelf.
Bake for 35-45 minutes or until the crust is golden brown and you notice bubbles coming from the fruit.
Remove from oven and allow to cool before slicing.