Preheat a grill over medium heat
Using kitchen shears, cut top of lobster shell from meaty portion of tail. Using a knife, cut the lobster tail in half.
In a small bowl, whisk together melted butter, lemon juice, herbs, garlic, salt and pepper. Set aside.
Brush lobster meat all over with oil. Season with salt and pepper.
Grill flesh side down until lightly charred, about 5-6 minutes. Flip lobster, brush meat with HALF of the garlic butter mixture. Cover with lid and grill until just cooked through, about 3-4 minutes more.
Remove lobster from grill and season with a little extra salt, black pepper and red pepper flakes.
Brush with remaining garlic butter and serve with lemon wedges.