Season the diced chicken with 1 teaspoon kosher salt, smoked paprika, and dried oregano (or dried herbs) until evenly coated.
Heat a large skillet over high heat and lightly spray or oil the pan. Add the chicken in a single layer and brown, 3 to 5 minutes, stirring or flipping so pieces brown evenly.
Remove the browned chicken to a plate. Reduce heat to medium, add a little more oil or spray, then add the minced onion, garlic, and grated ginger; cook about 1 minute until fragrant.
Pour in the chicken broth to deglaze the pan, scraping up any browned bits, and simmer about 1 minute.
Stir in the tomato paste, 1 1/4 cups light coconut milk, and 1/2 teaspoon kosher salt. Bring the sauce to a gentle simmer and cook a few minutes until slightly thickened.
Return the browned chicken and any collected juices to the skillet, reduce heat to medium, and cook 3 to 4 minutes until the chicken is cooked through and heated through.
Serve the coconut chicken over cooked jasmine or basmati rice, garnish with fresh cilantro, and drizzle with extra coconut milk if desired.