INGREDIENTS
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4 boneless, skinless chicken breast halves, about 6 oz. each
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Kosher salt and freshly ground pepper
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1 tsp. Italian seasoning
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Olive oil for brushing
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8 slices fontina cheese
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8 slices sourdough bread
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Mayonnaise (optional)
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8 thick tomato slices
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4 Tbs. pesto, homemade or store-bought