The poblano yogurt is a key component here, but I totally understand if you want to skip out on it because of time, lack of poblanos, or you're anti-chile. No problem, just about any flavor-forward yogurt slather will do in its place. You could simply crush a clove of garlic into some paste with a pinch of salt, and stir that in your favorite plain yogurt - also delicious. Or, whisk a tablespoon of harissa paste into your yogurt.