Place a large pot with tight fitting lid over medium high heat, add oil, and vegetables
Cook stirring often until veggies start to take on some color, season with salt and pepper and Italian seasoning
Add split peas, water, chicken stock and cover, reduce heat to low (be sure it's simmering) and cook until peas are super tender about 50 minutes.
Puree soup with immersion blender or Vitamix until smooth.
Adjust seasoning....serve in bowl and garnish with croutons, parmesan cheese and a few drizzled of olive oil.