Preheat oven to 400°. Place waffles and chicken on a two large baking sheets. Bake waffles until golden and crispy, 15 minutes. Continue baking chicken until warmed through and crispy, 30 minutes total. Cut both into large chunks.
In a large bowl, whisk together eggs, milk, maple syrup, and butter. Season with with salt and pepper.
Reduce oven to 375°. In a 9”-x-13” baking pan layer waffles and breaded chicken then pour egg mixture on top. Bake until golden and set, 45 minutes to 1 hour.
Serve warm with maple syrup