If possible, slice the watermelon and seal it with white wine in a chamber vacuum sealer. Let it sit in the fridge for at least a couple of hours.
If you don’t have access to bonito flakes (dried fish flakes), you can carve off 6 inches of skin from a salmon fillet and smoke the skin at 225 F for a couple of hours for the ponzu sauce. You may also wish to smoke the orange zest slices during this time (but only for 1 hour or less).
To make the ponzu sauce, add all the ingredients to a medium saucepan and bring it to a low simmer. Simmer on low or medium-low for 1 ½ hours. When done, strain it through a coffee filter or paper towel so only the liquids remain.
While the sauce simmers, add all the Togarashi spice ingredients to a blender or spice grinder and thoroughly blend until its finely ground. Set aside the Togarashi spice mix.
Thickly slice the pheasant breasts and keep the tenderloins as their own pieces. Lightly dust them with kosher salt and freshly cracked black pepper.
Once the sauce and spice mix are ready and the watermelon slices have marinated for at least 2 hours, grill the pheasant hot and fast, approximately 2 minutes per side, over a 600-degree or higher fire or grill grate.
Let the pheasant meat rest. While it rests, carve the avocados and smash their contents to the texture of guacamole. Thinly slice the jalapeños.
To serve, add the watermelon slices to a plate and drizzle the ponzu sauce over top. Next, add a bit of avocado to each slice, followed by a pheasant slice. Then, top with a slice of jalapeño. Secure everything with a toothpick and sprinkle Togarashi spice over the top.