Bring 3 to 4 inches of water to a boil, salt it and add the broccoli rabe. Cook at low boil 4 minutes. Cold shock in ice water and drain; pat dry on kitchen towels.
Heat a nonstick skillet over medium-high heat with EVOO, 3 turns of the pan. Swirl in garlic, 1 minute or so, then add rabes and toss to combine. Add juice of 1/2 lemon.
Build panini: Roll bottom, provolone, rabes, hot and sweet peppers, shaved fennel, red onion, semi-dried tomatoes, red pepper pecorino. Dress top of roll with hot honey and set in place. Press to crisp bread and warm sandwich.