Wash the meat, pat dry and cut into cubes. Peel onion and cut into 2 slices. Wash the cherry tomatoes. Put meat, zucchini, tomatoes and onion on 2 skewers. Heat oil in a frying pan, fry skewers for 6-8 minutes while turning.
Season with salt and pepper. Wash the thyme, shake dry and add to the pan shortly before the end of the frying time. Peel garlic and dice coarsely. Remove the avocado flesh from the skin and dice coarsely.
Puree the avocado, garlic and lemon juice. Stir in yoghurt. Season to taste with salt, pepper and cayenne pepper. Stir the chili into the dip. Arrange skewers and dip on a plate, garnish with chilli.
Serve with baguette.