For the salad, mix the couscous with 1⁄2 tsp. salt. Pour 200 ml boiling water over it. Let it swell for about 5 minutes. Loosen up with a fork. Clean, wash and finely dice the peppers. Wash parsley, shake dry, pluck leaves from the stalks and chop finely.
For the vinaigrette, wash the oranges in hot water, dry them and grate the peel thinly. Set the peel aside. Halve the oranges and squeeze. Whisk 8-10 tbsp. juice with salt and pepper. Fold in 3 tablespoons of oil.
Mix the couscous, peppers and half of the parsley with the vinaigrette. Season salad with salt and pepper to taste.
Peel the garlic for the Gremolata. Wash the rosemary, dab dry and remove the needles. Chop garlic and rosemary finely. Mix remaining parsley, rosemary, garlic and orange peel with 3 tbsp. oil.
Season with salt and pepper.
Wash the meat, dab dry. Grill on the hot grill for about 2 minutes on each side. Remove meat from the grill and season with a little salt and pepper. Spread Gremolata on top. Add couscous salad.