Preheat the oven to 425°F. Line a baking tray with parchment paper and set aside.
Ensure all of your veggies are chopped to the appropriate size. You want them to be large enough that they stay on the skewers, but not so large that they cannot be eaten in 1-2 bites.
If desired, you can make crispy tofu to have on your kebabs. To do so, mix the soy sauce, oil, and hot sauce (optional) until emulsified. Pour the sauce onto one plate and spoon the cornstarch onto another. Dip the tofu cubes into the cornstarch, then the sauce, then back into the cornstarch. Set aside to use on the kebabs.
Add the veggies and vegan meat alternative or tofu in whatever pattern you'd like. You can also add the vegetables randomly, but a pattern helps to ensure that you add them somewhat evenly and don't end up with a stick just filled with one vegetable. Repeat for all 8 sticks.
Arrange the sticks on the baking tray.
Lightly brush all of the vegetables with the olive oil so that they are coated on all sides.
Sprinkle the salt and pepper on top of all of the skewers and then add whatever other seasoning you'd like to add.
Place the tray in the oven and bake for 20 minutes.
Remove from the oven and let cool for 3-4 minutes before digging in!