Step 1
Line a baking sheet with parchment paper.
Step 2
Place zucchini spirals in a colander and sprinkle 1 teaspoon salt and Italian seasoning over zucchini; toss to coat. Set colander over a bowl to allow water from zucchini to drain.
Step 3
Wrap chicken in plastic wrap and place on a work surface; pound into 1/4- to 1/2-inch thickness. Remove plastic wrap and season chicken with salt and pepper.
Step 4
Heat marinara sauce in a saucepan over low heat.
Step 5
Coat a nonstick skillet with cooking spray and place over medium-high heat. Cook chicken in the hot skillet until browned and no longer pink in the center 4 to 5 minutes per side. Transfer chicken to the prepared baking sheet.
Step 6
Set oven rack about 6 inches from the heat source and preheat the oven's broiler.
Step 7
Place zucchini in the same nonstick skillet over medium-high heat; cook and stir until tender yet firm to the bite 3 to 4 minutes.
Step 8
Spoon marinara sauce over each chicken breast and top with mozzarella cheese.
Step 9
Broil chicken in the preheated oven until cheese is melted 1 to 2 minutes.
Step 9
Transfer zucchini to each serving plate and add chicken. Spoon warm marinara over each piece of chicken and top with Parmesan cheese.