Boil the Pasta: Bring a large pot of water to a rolling boil over high heat. Add the pasta shells and cook until tender, about 9 to 11 minutes.
Cook the Broccoli: Add the broccoli florets during the last 2 to 3 minutes of pasta cooking so the broccoli turns bright green and stays crisp-tender.
Drain Everything: Drain the pasta and broccoli in a colander, then return them to the pot off the heat.
Add Chicken: Stir in the cooked shredded chicken until it’s evenly mixed through the hot pasta and broccoli.
Make It Creamy: Add the alfredo sauce and ranch dressing, then stir until everything is coated and creamy.
Season and Load It Up: Stir in the black pepper, bacon, and shredded white cheddar cheese. Mix until the cheese is melted and the mixture looks thick and saucy.
Fill the Baking Dish: Spoon the mixture into a 9x13-inch baking dish and spread it into an even layer.
Top with Crackers: Sprinkle the crushed buttery crackers evenly over the top for a crunchy finish.
Bake Until Hot: Cover the dish with aluminum foil and bake at 350°F for about 20 minutes, until heated through.
Prep the Salad Ingredients: While the pasta bakes, slice the peaches, slice the mozzarella, and tear or ribbon the basil.
Assemble the Peach Caprese: Arrange peach slices and mozzarella slices on a platter, alternating as you go. Scatter the basil over the top.
Dress and Finish: Drizzle the salad with olive oil, then drizzle with balsamic glaze.
Serve: Remove the foil from the baked chicken cheddar shells and serve warm with the peach caprese salad on the side.