INGREDIENTS
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2 (9 by 10-inch) sheet frozen puff pastry, thawed and cut into 12 (3 by 5-inch) rectangles
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4 (4-ounce) boneless and skinless chicken breast halves
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Kosher salt
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Olive oil, for drizzling
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3 tablespoons reduced fat mayonnaise
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1/4 teaspoon cayenne pepper
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1/2 large avocado, thinly sliced into 8 pieces
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2 cups baby spinach leaves