Oral Allergy Syndrome Friendly Sheet Pan Chicken with Asparagus and Leeks

• 

  4 bone-in, skin-on chicken thighs (about 2 lb total)
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  Ingredients can vary. Tap to see products that likely fit a Oral Allergy Syndrome diet.
• 

  1 lb asparagus, tough ends snapped off
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• 

  2 medium leeks, white and light-green parts only, halved lengthwise and cut into 2-inch pieces
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• 

  3 tbsp olive oil, divided
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• 1 tsp dried thyme
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• 

  1 tsp dried oregano
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• ¾ tsp fine sea salt, divided
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• 

  1 tbsp apple cider vinegar
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For serving

• 2 tbsp fresh parsley, roughly chopped (optional)
  Can be omitted

  fresh parsley