Line a baking sheet with foil; coat foil with cooking spray. Coat the flat surface of a metal spatula with cooking spray; set aside.
Heat a large nonstick skillet over medium-high heat. Add kernels; cook until they release a toasted aroma (about 3 minutes), stirring frequently. Place in a bowl; wipe pan with a paper towel.
Heat pan over medium-high heat. Add curry powder; cook until fragrant (about 30 seconds), stirring constantly. Add curry to kernels. Sprinkle with salt; stir to combine.
Combine sugar, water, and corn syrup in a saucepan. Bring mixture to a boil over medium-high heat, stirring occasionally until sugar dissolves. Continue to cook, without stirring, until first sign of caramel fragrance (about 3 minutes).
Remove from heat; stir in kernel mixture. Rapidly spread mixture to about 1/8-inch thickness onto prepared baking sheet using prepared spatula. Cool completely; break into small pieces.