For the marinade, mix together the juice of half a lemon, the garlic, half the olive oil, and salt and pepper. Cut the chicken into large chunks, coat with the marinade and refrigerate for half an hour.
Dice the roasted pepper and halve or quarter the cherry tomatoes.
Fry the chicken in a little oil on low heat. Cover with a lid so that the meat cooks on the inside. When the chicken is half cooked, turn it over to cook on the other side.
Prepare the dressing by mixing the remaining lemon juice, olive oil, salt and pepper.