Preheat the oven to 350 degrees F. In a medium-sized bowl, combine the almond, psyllium powder (no substitutes: flaxseed meal won't work), baking powder and salt. Add in the eggs and combine until a thick dough. Add boiling water or salsa into the bowl. Mix until well combined.
Separate the dough into 2. Place the dough onto a piece of greased parchment paper. Using a rolling pin, roll the dough out in a circle shape with even thickness throughout, about 1/4 inch thick. Place desired pizza fillings in the middle of each circle. (NOTE: don't put pizza sauce inside as a filling or the bottom will get gummy. Just use it for dipping.) Fold the circle in half and pinch the edges closed with your fingers. Place each calzone onto a cookie sheet about 3 inches apart from each other. Bake for 45-55 minutes or until golden brown. Serve with Primal Kitchen Marinara.