This is probably the quickest salad or bruschetta I make, but no less tasty for that. Very few ingredients, simple flavors, complete sense. Try to make use of the wider range of cherry tomatoes available now: yellow, tige, and plum cherry tomatoes for instance. And, as I always say, it's much better, taste-wise, to buy olives with their stones still in than without. Trust me.
Simply squash your tomatoes into a bowl. I always have to put one hand over the tomatoes as I do this as juice and pips go everywhere (generally on me). You can be as rough with the tomatoes as you like, as the salad looks much better rough and rustic than perfect and pretty. Then, gently smash the olives on a board with a hard object, like a cup or a rolling-pin. Remove the stones, throw the olives in with the tomatoes, and toss together. Add a few glugs of oil, the oregano, a drizzle of vinegar, crumbled chile, and rip in the basil. Season, to taste, and that's your salad.
Griddle or toast the slices of bread and rub with the garlic clove, pile on the tomatoes, and rip the mozzarella and lay over the top drizzle with a little bit more oil and finish with shaves of Parmesan.