Add to the mashed potatoes all the other ingredients, and mix very well.
On a baking sheet with parchment paper spread the potato dough in a thin round layer. Leave some higher frame.
Place in the oven on the lower rack and let it golden and get crispy.
Take the pizza base out of the oven and place all the toppings you like on the top. Sprinkle some additional olive oil on the top of all and place the pizza again in the oven.
Reduce slightly the temperature and let the pizza in the oven until the cheese is melted or it looks ready. Around 10 to 15 minutes.
Serve hot and steamy!
You can use whatever flour you like. Store-bought paleo or gluten-free flour works as well. I would not recommend a very nutty or sweet flour like almond or chestnut flour. Pay attention with coconut flour which absorbs all the moisture, and you should reduce the quantity in that case.