Tunisian tagine is very delicious recipe. You can serve it as side dish or breakfast. Tunisian tagine is completely unlike a Moroccan tagine. In Tunisia, a tagine resembles an Italian frittata. I can guarantee that the whole family will love it. So try it
If you don't have harissa - use another hot condiment that you like (or just leave it out if you don't like it), like Sambal Oelek or whatever suits you. Or, dried chili powder