Flatbread with toppings is pretty ancient and there's frescos preserved at Pompeii that show flatbreads with various toppings on. Now really really early versions cheese and fruit like dates on the round flatbread. Ancient Greeks used fruit coulis with their flatbreads they also used ones with herbs, garlic, cheese and onions. Other styles from back then were called focaccia but they're not the round style like at Pompeii.
The 1800s the Neapolitans produced a round flatbread with toppings and called it pizza, piazziolos for the sellers IIRC. But giving it the modern name did that make it a pizza or were those round, topped flatbreads of several hundred years BCE not pizzas in all but name.
So in that case we should be eating pizzas with cheese, onions, garlic and herbs but without tomato? Afterall tomato was brought from the new world by the Spanish so it's a modern topping for round flatbread dishes that were pizzas before they got the name.