Heat waffle iron. Combine wet ingredients and whisk well to combine. Sift dry ingredients into a large bowl and form a well in the center. Add the wet mixture to the well and fold in with the dry. Don't worry if there are a few lumps. Stir in pecans just before cooking.
When iron is hot, spray lightly with non-stick spray. Spoon 1/2 to 3/4 cup of batter onto the center of the iron and cook until a golden brown crust forms.
Serve warm with burnt peach ice cream.