Cook sausage on medium-high until it starts to brown.
Add onion and garlic, let cook until onion starts to soften. You may need to reduce your heat.
Add tomatoes, salt and pepper, and Italian seasoning.
Allow tomatoes to cook down 2-3 minutes until they start to make a sauce.
Add spaghetti squash and cook to warm through.
Remove from heat, or turn to low, and add baby spinach.
Plate your pasta and crumble goat cheese on top.