Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a medium mixing bowl, combine the ground chicken, egg, 2 tablespoons of parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper.
Mix the ingredients thoroughly until a sticky dough-like consistency forms.
Transfer the mixture to the prepared baking sheet and pat it down into a uniform rectangle about 1/4 inch thick.
Bake for 15 to 20 minutes until the edges are firm and the surface is cooked through.
While the base bakes, mince the fresh garlic clove and whisk it into the extra virgin olive oil.
Remove the tray from the oven, brush the top with the garlic-oil mixture, and sprinkle with the remaining 1 tablespoon of parmesan cheese.
Place the tray back in the oven under the broiler for 2 to 3 minutes until the top is golden and slightly crisp.
Let the breadsticks cool for 5 minutes before slicing into strips.
Warm the marinara sauce in a small bowl and serve alongside the warm breadsticks for dipping.