1/2 cup canola oil
2 tablespoons, plus 1 teaspoon finely chopped fresh garlic, salt made a paste
2 tablespoons, plus 1 teaspoon finely chopped fresh thyme leaves
2 tablespoons grated lemon zest
1 tablespoon chopped onion
Pinch crushed red pepper flakes
1 (3-pound) whole chicken, butterflied
Salt and freshly ground black pepper