Greek Pizza with Spinach, Olives, and Feta

Made this pizza as a trial run for this weekend.

Pizza dough (I used the focaccia recipe)
8 oz fresh spinach
Chopped red onion
Dried oregano
Dried basil
Ground black pepper to taste
olive oil
1 large tomato, thinly sliced
1 cup crumbled feta cheese
Kalamata olives, pitted and cut in half

Sauté the spinach with red onions, add salt and pepper, put to the side.
Generously oil the baking tray.
Spread the olive oil, oregano, basil, salt, and pepper on the pizza dough,.
Line the tomatoes, Kalamata olives, spinach mixture, and top it with the feta cheese.

Bake on 450°F/230°C