Pat the chicken dry and slice into thin strips or bite-sized pieces for quick cooking.
In a small bowl, whisk together the melted butter, olive oil, hot sauce, paprika, garlic powder, onion powder, salt, and pepper. Toss the chicken in the mixture until well coated.
Heat a large skillet over medium-high heat. Add the chicken and cook, turning once, until it’s cooked through and lightly charred at the edges, about 5–7 minutes.
While the chicken cooks, prepare the blue cheese slaw. In a bowl, mix the yogurt or sour cream, mayonnaise, lime juice, salt, and pepper. Stir in the blue cheese and shredded cabbage. If you like a brighter tang, add a splash more lime juice.
Warm the tortillas in a dry pan or microwave until pliable. If you like a little char, toast them briefly in the same skillet after removing the chicken.
Assemble the tacos: place a layer of slaw on each tortilla, top with buffalo chicken, and drizzle with any extra hot sauce if you want more heat. Finish with a sprinkle of cilantro if you’re using it.
Serve immediately with lime wedges on the side for a fresh finish.