Preheat oven to 375°F; line baking sheets with parchment.
Toast coconut in a dry skillet over medium heat 3-5 minutes, stirring frequently, until golden brown; set aside to cool.
Whisk flour, baking soda, and salt in a medium bowl.
Beat butter and both sugars in a large bowl until creamy and fluffy.
Beat in eggs, vanilla, and lime zest well.
Gradually mix dry ingredients into wet just until incorporated.
Fold in toasted coconut and chocolate chips evenly.
Drop rounded tablespoons onto prepared sheets, 2 inches apart.
Bake 9-11 minutes, until edges are golden and centers look soft.
Immediately sprinkle each with a pinch of flaky salt.
Cool on sheet 5 minutes; transfer to wire rack.