Here's some of the less conventional pizzas I made and liked in the past:
Tomato sauce, apples, blue cheese, thyme.
Ricotta, smoked motz, eggplants, mushrooms.
Spicy tomato sauce, feta, motz, tomatoes, olives, basil.
Bechamel, artichoke, rosemary, pistachios, Parmesan.
Moussaka flavored - eggplants, tomato sauce, bechamel, oregano, thyme, nutmeg, cumin.
Ricotta, mozzarella, pesto, tomatoes.
Sfincione with tomato sauce, caramelized onions, toasted breadcrumbs and Pecorino.
Roasted butternut squash, cream, mozzarella, sage and blue cheese.
Ajvar (fire roasted peppers and eggplants sauce), feta, nigella.
Ricotta, mozzarella, figs, aniseed.
Tomato and coconut milk based Indian curry (with cinnamon, cumin, ginger, cardamom and some lemon grass), chickpeas, motz, cilantro.
Thick style pizza with motz, caramelized onions, and blue cheese.
Thick style pizza with mussels, spinach-basil-garlic pesto, motz.
Also, not really a pizza, but a manoush bread with zaatar and olive oil.