Preheat your oven to 375°F (190°C) and line a large baking sheet with parchment paper.
Cut the wonton wrappers diagonally into triangles, place them in a single layer on the baking sheet, and mist lightly with avocado oil spray.
Bake the wonton triangles for 5-7 minutes until they are golden brown and crispy, then set aside to cool.
Using a very sharp knife, cube the sushi-grade ahi tuna into uniform 1/2-inch pieces and place them in a chilled glass bowl.
In a separate small bowl, whisk together the tamari, rice vinegar, toasted sesame oil, grated fresh ginger, minced garlic, and red pepper flakes.
Pour the marinade over the tuna and add the thinly sliced green onions, tossing gently to ensure every piece is coated.
Carefully dice the avocado and fold it into the tuna mixture, being gentle to keep the avocado pieces intact.
Transfer the poke to a serving bowl, garnish with black sesame seeds, and serve immediately with the crispy wonton chips.