How to Make It
In a bowl, toss the cherry tomatoes with the 1/2 cup of olive oil, shallot, mint, cilantro, vinegar and crushed red pepper. Season the salsa with salt and black pepper.
Light a grill. On a lightly floured work surface, press and stretch each piece of dough to an 8-inch oval and brush with olive oil. Grill two dough ovals over moderately high heat, turning once, until puffed and lightly charred, 5 minutes. Transfer to a work surface. Repeat with the remaining dough. Spoon the salsa over the flatbreads and top with the feta and avocado. Cut the flatbreads into wedges and serve right away.