Roasted pumpkin soup is seasonal and delicous. Cauliflower cheese soup is lovely too. Other soups - celeriac and stilton / tomato, saffron and almond (not very seasonal) / lentil, roast garlic and lime.
Or how about artichoke pate as a starter?
Or pumpkin roasted with thyme, garlic and chilli served on a bed of puy lentils with goat's cheese/feta.
Thai roasted vegetable curry?
Roasted beetroot with goat's cheese, rocket and walnuts?
Beetroot and feta tart (puff pastry base)?
Wild and field mushroom ragout?
Shallot, fennel and chestnut casserole?
Field mushroom, puy lentil and thyme casserole?
Butternut squash, pears and chickpeas in a saffron and almond sauce.
Guinness and mushroom casserole?
A lot of the above are from a new veggie cookbook I picked up second-hand - I can post recipes if any appeal.
I know what you mean about veggie chilli or lasagne. BORING!