Preheat the oven to 350°F.
With a sharp knife, cut a series of small slits into the roast, and insert the 16 garlic clove quarters all over the roast.
Sprinkle the roast with salt and pepper.
Add the chopped garlic, 1 teaspoon of olive oil, lemon zest and juice, oregano, and cayenne pepper to a small bowl. Set aside.
Add the remaining 2 tablespoons of olive oil to an ovenproof skillet, and brown the meat on all sides, taking care not to dislodge the garlic cloves.
Remove from the skillet.
Stir the garlic/lemon/spice mixture thoroughly and pour it over the roast, rubbing the spices into all sides.
Add the carrots to the skillet, and then place the roast on top.
Roast uncovered in the oven for about 40 minutes.
Remove from the oven and tent with foil. Allow it to cool for about 10 minutes. This allows the flavors to further infuse the meat.
Cut into thin slices and serve with the carrots.