Step 1

Set an oven rack about 6 inches from the heat source and preheat the oven's broiler.

Step 2

Slice zucchini into 3 lengthwise pieces. Spray each slice with cooking spray.

Step 3

Season with salt, garlic powder, and onion powder and set on a baking sheet.

Step 4

Broil in the preheated oven until lightly browned, about 5 minutes. Turn zucchini and broil on the other side until lightly browned, an additional 5 minutes.