Start by butterflying the chicken breast. Season both sides with Italian seasoning, salt, and pepper.
In a skillet over medium heat, add 1/2 tsp of olive oil. Once hot, add the seasoned chicken. Cook for about 5-7 minutes on each side or until the chicken is cooked through and reaches an internal temperature of 165°F (75°C). Remove from heat and let it rest.
In the same skillet, add 1 tsp of olive oil or butter. Place the slices of Eureka! bread in the skillet, toasting them until golden brown on one side. Flip and toast for a minute more.
On the un-toasted side of each slice of bread, spread 1 tablespoon of the skinny chipotle sauce. Layer the cooked chicken on two slices, followed by the sliced avocado. Top with the remaining slices of bread, chipotle side down.
Return the sandwiches to the skillet and grill on medium heat until the bread is golden brown and crispy, about 3-4 minutes per side. Press down gently with a spatula to ensure even grilling.
Once the melts are grilled to perfection, remove from skillet, slice in half, and serve immediately. Enjoy!