Add feta cheese, Greek yogurt, hot peppers, garlic, olive oil, vinegar (or lemon juice), oregano, and black pepper to a food processor.
Pulse, then process until mostly smooth (stop once it’s creamy, don’t over-blend).
Taste and adjust: More heat: add more pepper or a pinch of flakes. Creamier: add 1-2 more tablespoons yogurt or a drizzle more olive oil. Tangier: add a bit more lemon/vinegar.
Spoon into a bowl, swirl the top, and drizzle with olive oil. Sprinkle oregano or black pepper if desired.
Serve with pita, toasted crostinis, or crackers.
