To make the garlic butter, combine all ingredients and mix well. Set aside (room temperature)
Place a halved chicken breast in a gallon zip top bag with a little oil. Using a meat mallet, pound the chicken until about 1/2” thick all the way across. Transfer to a shallow container with 1 (16 oz) bottle Smoke on Wheels BBQ Marinade. Repeat with the remaining halved breasts.
Preheat your Napoleon Grills Prestige 500. Remove one of the standard grates and install a Napoleon Reversible Cast Iron Griddle, flat side up. Light the burners under the griddle and set to medium heat.
To make the tomato sauce, first puree the canned tomatoes in a blender or food processor. Heat a sauté pan over medium-low heat. Add the olive oil and allow to warm. Add the garlic to the oil and cook gently until fragrant and just beginning to brown, about two minutes. Add the tomatoes and red pepper flakes. Turn the heat up to medium. Allow to simmer and reduce to desired consistency, about 10 minutes. Season with salt, to taste. Set aside.
Combine breadcrumbs, parmesan, and Cattleman’s Grill Italiano Seasoning in a shallow container (salad plate or shallow bowl). Set up a second shallow container with the flour.
Remove the chicken from the marinade, wiping excess marinade from the surface. Dredge in the flour, then dip back in the marinade. Dredge in the breadcrumb mixture. Transfer to a sheet pan.
Preheat a Lodge 10” Cast Iron Skillet on the side burner of the Napoleon, over medium heat. Add one tablespoon butter and two tablespoons Saica Sicilian Extra Virgin Olive Oil to the skillet. When the butter is melted, add two of the breaded chicken breasts. Cook until browned on the bottom. Flip and top with red sauce and mozzarella cheese. Cover the skillet with a lid and continue cooking until the bottom is browned, the cheese is melted and the internal temperature rises to 160ºF. Optional - brown the top of the mozzarella with a torch.
Wipe out the skillet and repeat with the remaining chicken.
While the chicken cooks, spread the ciabatta with the garlic butter. Toast on the skillet until browned on the cut side of the roll. Flip the bun and place slices of provolone on the bottom halves of ciabatta buns. Remove when the bread is softened and cheese begins to melt.
To assemble the Chicken Parm Sandwich, cut a chicken filet in half and stack one half on the other. Place the chicken on the bottom ciabatta bun (with the melted provolone). Top the chicken with Calabrian chiles and cover with the top bun. Repeat with remaining sandwiches.