In a large bowl, mix flour, baking powder, pepper, granulated garlic or Cajun seasoning, if using, breadcrumb and cheese together. Add all the vegetables and toss to combine, making sure to break up the zucchini and coat everything with flour mixture.
Crack eggs into a small bowl, give a little whisk and pour over veggie mixture. Mix to THOROUGHLY combine.
Heat a sauté pan (skillet) over medium-high heat, add a drizzle of oil (a teaspoon or two) and swirl to coat the bottom of the pan.
Using a scoop (or a large spoon), drop mixture into the hot pan and flatten out with your fingers to form a patty.
Cook for 4 - 5 minutes on each side, turning down the heat if they begin to brown too quickly.
Remove from pan to a cooling rack placed inside a sheet pan, or a paper towel lined baking sheet.
Repeat until mixture is gone.