Preheat your grill to medium-high heat (around 400°F). Pat the salmon fillets dry with paper towels—this crucial step ensures proper searing and prevents sticking. Brush the grill grates with oil to create a non-stick surface.
In a small bowl, whisk together honey, smoked paprika, Dijon mustard, balsamic vinegar, minced garlic, and cayenne pepper until completely smooth. The mixture should resemble thick syrup; if too thin, let it sit for one minute to thicken slightly.
Brush each salmon fillet generously with olive oil, then season with salt, pepper, and fresh thyme on both sides. Place the fillets skin-side up on the preheated grill and cook for 6-7 minutes without moving them—this builds a caramelized crust and keeps the flesh moist.
Flip the salmon carefully, then brush the cooked side generously with your smoky honey glaze. Cook for another 7-8 minutes, basting with additional glaze halfway through. The internal temperature should reach 145°F at the thickest point—use an instant-read thermometer for CIA-level precision.
During the final two minutes of cooking, top each fillet with a pat of butter and a squeeze of fresh lemon juice. The butter melts into the glaze, creating a silky finish that makes this grilled salmon absolutely irresistible.
Transfer the smoky honey glazed grilled salmon to a serving platter and tent loosely with foil for one minute. This resting period allows the residual heat to finish cooking the center while the exterior stays perfectly caramelized and tender.