In a heavy skillet over high heat, cook bacon until slightly crispy. Turn down heat to medium and stir in onions and garlic. Cook until translucent.
Add red and green peppers and cook until slightly soft, about 6 minutes. Stir in zucchini and cook an additional 4-5 minutes. Add tomatoes, mix well, and cook for an additional 5-10 minutes, until all flavors are nicely blended. Add salt to taste.
Remove from heat and top with manchego cheese. Let cheese melt slightly before serving.
Recipe by Things I Made Today at https://www.thingsimadetoday.com/2014/07/31/pisto-manchego/