Bring peas, water, and chicken broth to a boil in a medium-sized pot. Cover and lower to a simmer. Allow to cook for about 30 minutes. Transfer to a food processor (or blender) and add the onion powder, ground marjoram, and garlic. Process until everything is blended and creamy. (The hummus will thicken as it cools so add more chicken broth if it seems too thick.) Transfer to a serving dish and sprinkle with crumbled bacon. Drizzle olive oil over top just before serving.