• In a large skillet, add the olive oil over medium-high heat.
• Add the diced onion, cooking until it starts to soften, about 5 minutes.
• Add the ground chicken and cook until browned, breaking it up into chunks as you go.
• Once the chicken is cooked, add the shredded zucchini and Italian seasoning, and cook another 3-4 minutes to slightly cook the zucchini.
• Add the marinara and cook for another 5 minutes.
• Finally, add the mozzarella, turn the heat to low and cover until the cheese is melted, about 4-5 minutes.  Alternately, if you are making this in an oven-proof skillet, you can broil the cheese.
• Serve on top of toasted Brioche buns, topped with golden buttered breadcrumbs.
• Enjoy!

To Make Buttered Breadcrumbs:

• While the chicken mixture is cooking, you can make the breadcrumbs.
• Heat the butter over medium heat.
• Add the breadcrumbs, and stir to mix with the melted butter.  Season with salt, to taste.
• Cook 2-3 minutes, until the breadcrumbs are slightly golden.