California Avocado-Rosemary Chicken and Pancetta Panini

Ingredients

• boneless and skinless chicken breast halves
  6 unit
• olive oil

  as needed
  1 unit
• finely chopped fresh rosemary
  2 tsp
• garlic

  chopped finely
  3 cloves
• California avocado
  1 unit
• lemon juice
  1 tbsp
• finely chopped lemon zest
  1 tsp
• salt

  as needed
  1 unit
• pepper

  as needed
  1 unit
• mayonnaise
  3 tbsp
• focaccia

  about 4" x 5" each
  12 pieces
• tomatoes

  sliced
  2 medium
• (rounds) pancetta (Italian bacon)

  fried crisp. Two to three slices of bacon may be substituted for each slice of pancetta.
  6 slices
• arugula leaves as needed
  1 unit