Preheat your oven to 375°F and move the rack to the top third. Slice the chicken breasts in half lengthwise to create thinner cutlets. Season both sides with salt and pepper to enhance flavor.
In a large bowl, combine ricotta, parmesan, minced garlic, and Italian seasoning. Mix until smooth and creamy, making sure all ingredients are evenly incorporated.
Spread half of the marinara sauce evenly on the bottom of your baking dish. Lay the seasoned chicken cutlets on top, then spoon the ricotta mixture over each piece. Finish with the remaining marinara sauce.
Cover the dish tightly with foil and bake for 20 minutes. This allows the chicken to cook evenly and the cheeses to meld. Remove foil, sprinkle shredded mozzarella over the top, and bake uncovered until chicken is cooked through. Broil for 1–2 minutes if you want extra bubbly cheese.
Allow the baked chicken to rest for a few minutes before serving. Garnish with fresh basil for a pop of color and added freshness.