Turn on the oven’s broiler. Place an oven rack 6” / 15 cm from the heat source.
Heat a large skillet (it should be large enough to hold all of the ingredients, including pasta) with butter over medium heat. When butter melts, add zucchini and sausage with a pinch of salt and saute until zucchini is tender, 4 to 5 minutes.
Stir in flour and oregano until no dry spots remain.
Pour in stock and add spinach and garlic. Saute until spinach is wilted, ~3 minutes (you can cover the pan with a lid to speed things up).
Remove pan from heat and stir in pasta, artichokes, and roasted bell peppers. Taste and season with some salt and pepper.
Grate cheese over top of pasta and place skillet under the broiler. Broil just until the parmesan topping is golden brown, ~2 minutes. (Be careful - the handle of the skillet will get very hot!)