Preheat your oven to 400°F (200°C).
In a small bowl, mix the olive oil, minced garlic, oregano, salt, black pepper, and red pepper flakes (if using).
Place the flatbreads on a baking sheet. Brush the garlic oil mixture evenly over each flatbread.
Evenly distribute the chopped artichoke hearts, spinach, and cherry tomatoes over the flatbreads.
Sprinkle the mozzarella cheese and feta cheese on top of the vegetables.
Bake in the preheated oven for 12-15 minutes, or until the cheese is melted and bubbly and the edges of the flatbread are golden brown.
Remove from the oven and let cool for a minute. Garnish with fresh basil leaves before slicing and serving.