Preheat the oven to 350° F and line two baking sheets with parchment paper.
Toss the zucchini and olive oil together in a bowl.
Mix the flour, garam masala and cumin together well, then add it to the zucchini. Using your hands or a wooden spoon, mix until the spice mixture is stuck to the zucchini.
Spread out the zucchinis on the baking sheets, then lightly sprinkle them with salt and pepper. Bake for 10 to 15 minutes, until tender but not limp.