Preheat oven to 375°F and spray a 9×13 casserole dish with olive oil spray.
Cut the garlic Texas toast into bite sized pieces and spread throughout the dish. Bake for 5-7 minutes while you prep everything else.
Mix the shredded chicken, marinara, Parmesan, minced garlic, Italian seasoning, garlic butter seasoning, salt & pepper.
Spoon the chicken mixture around and over the partially baked garlic bread.
Top with the mozzarella.
Sprinkle the crushed Ritz over the cheese, and lightly spray the top with olive oil.
Bake uncovered for another 15-20 minutes, until hot and bubbly with a golden, crispy top.
Let sit for 5 minutes and DIG IN.
