Cut the poblanos in half lengthwise and place them on a sheet pan with the skin side up. Move your oven rack to the top and broil the poblanos until their skin has blackened and blistered (about 5 minutes). Remove the skin before dicing the peppers, set them aside.
In a large bowl, combine the dry ingredients. In a separate bowl, whisk together the melted butter, buttermilk and eggs just enough to break up the eggs. Pour this into the dry ingredients and mix just until combined but still a bit lumpy.
Fold in the poblanos and grated cheddar. Let the batter rest 20-30 minutes.
Heat up your waffle iron and cook the waffles according to the machine's instructions.
Notes
Make these a few hours ahead and warm them up in the oven just before serving.
Recipe by Eat Some Wear Some at https://eatsomewearsome.com/fried-chicken-cheddar-waffles/