In a large mixing bowl, combine the white whole wheat flour, oat flour, baking powder, and salt. Whisk together until well blended.
In a separate bowl, mix the buttermilk, vanilla extract, eggs, melted butter, honey, and lemon zest.
Stir the wet ingredients into the dry ingredients until just combined; it’s okay if there are a few lumps.
Gently fold in the chopped pistachios, walnuts, and dark chocolate chips.
Preheat a skillet or griddle over medium heat and lightly grease it with butter or cooking spray.
Using a ladle, pour about 1/4 cup of pancake batter onto the skillet for each pancake. Cook until bubbles form on the surface, approximately 2-3 minutes.
Flip the pancake and cook for another 2-3 minutes on the other side until golden brown. Repeat with the remaining batter, adjusting the heat as needed.
While the pancakes are cooking, combine the honey, reserved vanilla bean pod, and sea salt in a small saucepan over low heat. Stir occasionally until warmed through to infuse the vanilla flavor.
Remove from heat and discard the vanilla pod. Add vanilla extract for an extra burst of flavor.
Stack the pancakes high on a plate, drizzle generously with the salted vanilla honey syrup, and garnish with additional chopped nuts and chocolate chips if desired. Dig in and savor every decadent bite!