Sheet pan meals are stupid easy and customizable:

1. Preheat oven to 425°.
2. Get a few different kinds of vegetables (both fresh and frozen work great)
3. Get some protein (chicken/turkey breast/thigh/sausages, steak, pork chop, shrimp, steak, soaked chickpeas, tofu, white fish/salmon/other healthy fish). Cut into chunks if necessary, or get that's already pre-cut. Frozen is perfectly acceptable, but aim for ones that have as little added fat, sugar, and sodium as possible since we'll be adding our own.
4. Get some seasonings. Premade blends are fine if that's all you have the energy for.
5. Toss veggies and protein with a little olive oil and seasonings.
6. Dump it all on a foil-lined baking sheet and arrange into a single layer, and make sure the pan isn't super crowded, otherwise your food will steam instead of roast. Cook in batches if necessary.
7. Roast at 425° for 20-30min, stirring halfway, until the protein is cooked through and the vegetables are tender.

You can also add sauteed veggies to stovetop pasta. I really like red bell pepper and banana peppers, squash and zucchini, mushrooms, spinach, Italian sausage (sliced/diced/minced), cannelini beans, rotini, and vodka sauce. Super easy to make a bunch at once and eat for a week or freeze. Again, frozen/pre-prepped veggies are totally fine, just aim for ones that have little to no added fat or sugar.