I have a local eatery who makes an amazing flatbread sandwich. This panini is based on their chicken pesto sandwich. I recommend pane turano, or you may use a sturdy sourdough.
Heat a panini grill on the highest setting. Brush 2 pieces of bread with butter. Assemble panini with chicken, bacon, and mozzarella. Lower panini press. Cook until bread is golden and cheese is melted, about 5 minutes.
Carefully separate bread and add in some sliced avocado, tomato, and pesto. Repeat above steps for additional panini sandwiches.
Reassemble sandwiches and cut in half. Serve immediately.
Per Serving: 683 calories; protein 44.3g; carbohydrates 36.5g; fat 40.1g; cholesterol 184.2mg; sodium 1814.6mg.