Preheat the oven to 375°F.

Brown the Chicken: Heat the oil in a large, oven-safe skillet over medium-high heat. Add the chicken, salt, pepper, Italian seasoning, and crushed red pepper flakes and toss to combine. Sauté the chicken into a single layer and cook, tossing occasionally, until the chicken is golden brown, it doesn't have to be cooked through, but you want it to have some nice color to it. Set it aside on a plate.

Cook the Orzo: Add the garlic, shallot, and mushrooms and continue to cook, tossing occasionally, until the mushrooms begin to soften and the shallots are tender, about 4 minutes. Reduce heat to medium, add the baby spinach, and cook, gently tossing, until just wilted, about 2 minutes. Add the wine and cook until reduced by half, about 2 minutes.

Add the orzo and toss to combine. Add the broth, lemon zest, lemon juice, salt, and ricotta cheese and stir until well combined. Bring to a simmer and add the cooked chicken back into the skillet. Toss until well combined then spread the contents of the skillet into a single layer.

Sprinkle the top with the mozzarella. Transfer to the oven and bake until the orzo is cooked through and tender and the cheese is brown and bubbly, about 15 minutes.

Remove from the oven and let rest for 3-5 minutes to allow the sauce to settle and thicken even further.

To Serve: Top with basil, serve, and enjoy!