Preheat the oven to 450℉.
Prepare the okra. Wash the fresh okra and dry it thoroughly before cutting. Trim a little from both ends, then slice lengthwise into halves, as shown in the photos. You can also cut the okra into smaller rounds.
Season the okra. Place the sliced okra in a large bowl and toss with 2–3 tablespoons of olive oil or vegetable oil. Add the garlic powder, smoked paprika, salt, cayenne pepper, and black pepper. Toss until evenly coated.
Arrange on the baking sheet. Lightly oil a baking sheet and spread the okra in a single layer, leaving space between the pieces.
Bake the okra. Place the baking sheet in the oven for 10 minutes. Remove it, flip the okra, then return it to the oven for another 10–15 minutes, until tender with browned edges.
Cool and serve. Remove the okra from the oven and let it cool for about 5 minutes before serving.