In a large bowl, combine the flour, salt, and instant yeast.
Add the warm water and olive oil. Mix until a shaggy sticky dough forms.
Cover and let the dough rest for 20 minutes.
Wet your hands and perform the first stretch and fold by pulling one side of the dough upward and folding it over itself. Rotate the bowl and repeat on all sides.
Cover and let rest for 20 minutes.
Repeat the stretch and fold process 2 more times for a total of 3 stretch and folds.
Cover the dough tightly and refrigerate overnight for 12–18 hours.
Generously oil a 9x13 baking dish.
Transfer the dough to the pan and gently stretch it toward the edges. If it springs back, let it rest for 10–15 minutes and continue stretching.
Cover and let rest at room temperature for 1–2 hours until puffy.
Preheat the oven to 425°F.
Drizzle olive oil over the dough and use your fingertips to create dimples across the surface.
Top with cherry tomatoes, parmesan cheese, Italian seasoning, garlic powder, and flaky salt.
Bake for 25–30 minutes until golden brown with crispy edges.
Let cool slightly before slicing and serving.