Step 1

Combine chicken, paprika, turmeric, and 1 teaspoon curry powder in a bowl. Season with salt and pepper. Chill at least 2 hours and up to 8 hours.

Step 2

Heat oil in a medium pot over medium heat. Add onion and garlic. Season with salt and pepper. Cook, stirring occasionally, until onion is tender, 8 to 10 minutes. Add stock and chicken. Cook, partially covered, until chicken is tender and cooked through, 18 to 20 minutes. Remove 2 tablespoons liquid from the pot. Stir cooking liquid and cornstarch together in a bowl until combined. Add an additional 1/4 cup cooking liquid and stir to combine. Add cornstarch mixture and coconut milk to pot. Cook, uncovered, until slightly thickened, 4 to 6 minutes. Stir in cayenne and remaining teaspoon curry powder. Season with salt and pepper.