I'm not GF or veggie but do cook a lot of GF and veggie stuff for myself & friends/family
I'd probably do something like
Veggie burrito bowls (basically a bowl of rice with whatever toppings you like. The toppings are lightly fried in a packet of fajita seasoning. We usually do any combo of carrots, chickpeas, baby corn, edamame, peppers. Then add whatever extras onto you fancy like salsa, sour cream, avocado slices)
Curries, especially paneer curry
Tofu dishes, tofu works best if its a dish that was always intended to have tofu in it. Not a dish that normally has meat but someone tries to make it veggie by adding tofu instead
Bean dishes. We love a veggie "puttanesca" which is basically beans such as chickpeas or cannelinni or similar fried with a tin of tomatoes, capers, olives and herbs
Shakshuka but without the bread. I love bread with my shakshuka but it's still nice without it, or maybe with GF bread instead!
Veggie stir fries with rice
Ramen with either rice noodles or no noodles