Preheat your oven to 400°F (200°C). Line your sheet pan with parchment paper.
In a bowl, mix ground turkey, chopped spinach, egg, breadcrumbs, garlic powder, onion powder, salt, and pepper.
Form the mixture into 8 slider patties and arrange on one half of a sheet pan.
Toss sliced peppers, zucchini, and onions with olive oil, oregano, salt, and pepper.
Spread the veggies on the other half of the sheet pan.
Bake everything for 25 to 30 minutes until patties are cooked through and veggies are tender.
Toast slider buns if desired and assemble sliders. Serve with roasted veggies.
Notes
Store leftovers in the fridge for 3-4 days or freeze for up to a month. Reheat gently to preserve moisture. Patties and buns freeze separately for max freshness.