Start by positioning your oven rack to the middle position and preheating your oven to 400°F. While it heats, pat your drumsticks completely dry with paper towels. Moisture is the enemy of browning—any water on the surface prevents proper caramelization. Pat each drumstick thoroughly, then arrange them on a rimmed baking sheet lined with parchment paper in a single layer. They should not be touching or overlapping. This spacing is critical because air needs to circulate around each piece for even cooking. If your drumsticks are crowded, use two baking sheets instead.

In a medium mixing bowl, combine the olive oil, kosher salt, black pepper, garlic powder, onion powder, smoked paprika, and cayenne pepper. Use a fork or small spatula to stir this mixture until it forms a paste-like consistency. The goal is to create an emulsion where the oil evenly distributes the dry seasonings rather than having clumpy pockets of spices. If the mixture seems too dry, add an extra ½ teaspoon of oil. If it's too wet, add an additional pinch of paprika. The paste should look like wet sand when you're finished mixing.

Using a pastry brush or your hands (I prefer my hands for better control), coat each drumstick thoroughly with the seasoning paste. Make sure you're working the paste into the skin and coating all exposed surfaces. Spend about 10-15 seconds per drumstick to ensure even coverage. Pay special attention to the thinner areas near the drumstick end, and don't neglect the undersides. The paste should be evenly distributed—no bare spots and no excessive buildup. If you have extra paste, you can drizzle it over the pan around the drumsticks.

Place your prepared baking sheet in the preheated 400°F oven. Set a timer for 40 minutes. This is important: do not flip the drumsticks during cooking. Flipping interrupts the caramelization process and can cause the seasoning to fall off. The chicken will cook through and develop that beautiful golden exterior on one side while the other side stays moist. After 40 minutes, check for doneness by inserting an instant-read thermometer into the thickest part of the largest drumstick without touching bone. The internal temperature should read 165°F or higher.

Once the chicken reaches 165°F internally, use a clean pastry brush to baste each drumstick with the pan juices that have accumulated at the bottom of the sheet. These pan juices contain concentrated flavor—don't waste them. If your pan seems dry (this sometimes happens if your oven runs hot), brush the drumsticks with a tiny bit of additional olive oil or chicken broth instead. Return to the oven for 2-3 additional minutes just to set the glaze. Then remove and serve immediately while the exterior is still crispy.