In a shallow bowl, whisk together the flour, granulated sugar, 1 teaspoon kosher salt, 1/2 teaspoon black pepper, 1/2 teaspoon garlic powder, and 1/2 teaspoon onion powder until combined.
In a second shallow bowl, whisk the 2 eggs, then whisk in the 1/4 cup heated coconut milk until smooth.
In a third bowl, combine the 1 cup Panko breadcrumbs and 1 cup sweetened shaved coconut and mix well.
Heat 1 cup coconut oil in a large frying pan over medium-high heat until it reaches about 350°F (or is hot enough for frying).
Working one piece at a time, dredge each chicken tender first in the flour mixture, shaking off excess, then dip in the egg-coconut milk mixture, and finally press into the coconut-Panko mixture to coat evenly.
Fry the coated tenders in the hot oil 3–4 minutes per side, or until golden brown and cooked through; do not overcrowd the pan (no more than 3 tenders at once).
Remove cooked tenders to a plate lined with paper towels or to a cooling rack to drain excess oil.
While frying, make the dipping sauce by blending 1/2 cup sweetened condensed coconut milk, 1/4 cup drained canned pineapple, and 1/2 teaspoon kosher salt until smooth; transfer to a small bowl.
Once all tenders are cooked, serve immediately with the pineapple-coconut dipping sauce and optional chopped cilantro.