Heat a large pot over your camp stove or campfire.
If using pre-cooked protein, skip to step 3. If using uncooked ground beef or sausage, cook the meat until browned.
Add chopped zucchini and bell pepper to the pot. Sauté for 3-4 minutes until slightly tender.
Pour in the pasta, diced tomatoes (with liquid), and water or broth. Stir to combine.
Season with garlic powder, Italian herbs, salt, and pepper.
Cover and simmer for 10-12 minutes, stirring occasionally, until the pasta is tender and the liquid is mostly absorbed.
Stir in the spinach (if using) and shredded cheese. Remove from heat.
Serve hot and enjoy!