Preheat your oven to 400°F (200°C) and grease a baking dish with nonstick spray.

Season chicken breasts with salt and pepper. Heat a skillet over medium-high heat and cook the chicken for 5-7 minutes on each side until golden brown. Remove from skillet and let rest.

In a large pot of salted boiling water, cook pasta according to package instructions until al dente. Drain and set aside.

In the same skillet used for the chicken, sauté minced garlic until fragrant (about 1 minute). Add marinara sauce and stir well.

Slice rested chicken into strips, add back into the skillet along with the cooked pasta, and combine thoroughly.

Transfer everything to the prepared baking dish; top generously with shredded mozzarella cheese. Bake for about 20 minutes until bubbly and golden brown.

Allow to cool slightly before serving; drizzle with extra marinara sauce if desired.