Once the roasted peppers are cool enough to handle peel the blackened skin, remove the green caps and seeds, and cut them into 1-inch wide strips, then further into bite-sized pieces.
In a large bowl, whisk together the sliced roasted peppers, red wine vinegar, chile flakes, oregano, other savory herb (or more oregano), ½ the mint, salt, and black pepper. Mince the red onion and garlic, then add them to the bowl.
Add the 2-4 tablespoons extra-virgin olive oil (depending on your personal preference; I used 2 tablespoons) and toss everything together.
Slice and then roughly chop the salami. Add the chopped salami and the prepared croutons to the large bowl and toss everything together to combine. Let rest for 15-30 minutes, enabling the salad to come together into a cohesive dish as the pepper juices to soak through the other ingredients.
Transfer the salad to a serving bowl. Scatter the mozzarella pieces on top, then the remaining mint. Serve at room temperature or slightly chilled.
If you don't heavily dress this salad with olive oil and if you use a hearty bread, any leftovers of this salad will keep for one to two days in the fridge.