Preheat oven to 350°F (180°C). Spray an 8½×4½-inch loaf pan with baking spray with flour. Line pan with parchment paper, letting excess extend over sides of pan.

In a large bowl, stir together flour, sugar, baking powder, salt, garlic powder, onion powder, baking soda, and peppers. Whisk in 1 cup (80 grams) cheese, parsley, and dill.

In a large bowl, whisk together buttermilk, melted butter, and egg. Add flour mixture to buttermilk mixture, stirring until just combined. Pour batter into prepared pan; sprinkle 2 tablespoons (10 grams) cheese on top.

Bake until a wooden pick inserted in center comes out clean and an instant-read thermometer inserted in center registers 200°F (93°C), 50 to 55 minutes. Sprinkle remaining 2 tablespoons (10 grams) cheese on top. Let cool in pan for 5 minutes. Using excess parchment as handles, remove from pan, and let cool on a wire rack for at least 15 minutes. Serve warm or at room temperature. Garnish with parsley and dill, if desired.