Place the rolled oats into a high-speed blender and pulse until they reach a fine, flour-like consistency.
In a small mixing bowl, whisk together the oat flour, egg white, and unsweetened almond milk until a thick, smooth batter forms.
Preheat your waffle iron and lightly coat with cooking spray if needed; pour in the batter and cook until the waffle is golden and crisp.
While the waffle cooks, season the chicken breast evenly on both sides with garlic powder, smoked paprika, sea salt, and black pepper.
Heat the avocado oil in a non-stick skillet over medium-high heat.
Add the chicken to the skillet and sear for 5 to 6 minutes per side, or until the exterior is golden brown and the internal temperature reaches 165°F.
Remove the chicken from the heat and slice into thick strips.
Place the warm oat waffle on a plate, top with the sliced chicken, and finish with a drizzle of pure maple syrup.