Slice the chicken breast into even strips and soak them in a bowl with buttermilk for 10 minutes to tenderize.
In a shallow dish, whisk together arrowroot powder, sea salt, black pepper, garlic powder, and smoked paprika.
Remove chicken from buttermilk, letting excess drip off, then dredge thoroughly in the seasoned arrowroot mixture.
Heat avocado oil in a non-stick skillet over medium-high heat and sear the chicken for 4-5 minutes per side until golden and crispy.
While chicken cooks, toast the whole grain waffle until it reaches a firm and crunchy texture.
Place the waffle on a plate, top with the crispy chicken strips, drizzle with maple syrup, and garnish with sliced green onions.