Preheat oven to 325°F. Line a rimmed baking sheet with aluminum foil. Toss together peanuts, jerk seasoning, and oil in a medium bowl. Spread nuts in an even layer on baking sheet. Bake in preheated oven until lightly toasted, about 15 minutes. Transfer nuts to a cutting board; let cool completely, about 15 minutes. Roughly chop nuts; set aside.
Stir together coconut milk, tamarind paste, fish sauce, and lime zest and juice in a medium bowl. Add tuna; toss to coat. Gently fold in avocado and toasted peanuts. Divide mixture evenly among serving bowls; season to taste with flaky sea salt. Garnish with cilantro and mint. Serve with taro chips.