Dough: Mix warm water, yeast, and sugar; let sit for 5 minutes. Pour into whole wheat flour and salt, add olive oil. Knead by hand for 6–8 minutes and let rise for 1 hour.
Crust: Preheat oven to 410°F (Convection Bake / top-bottom heat with fan). Dust a baking sheet with flour or line with parchment paper. Place dough on top and stretch by hand, leaving the borders slightly thicker.
Toppings: Spread tomato sauce over the crust and sprinkle with mozzarella. Thoroughly drain the tuna, flake it with a fork, and add to the pizza. Top with thinly sliced shallots and drizzle with olive oil.
Bake: Bake on the middle rack for exactly 10 minutes or until the crust is lightly golden brown.