Add chicken thighs to a large bowl and season with garlic powder, onion powder, herbs de provence, kosher salt, and black pepper. Toss to ensure everything is coated.
Add olive oil to a large dutch oven over medium heat. Allow the pan warm, then add seasoned chicken. Sear on both sides, about 5 minutes per side until golden brown. Remove from the pot and set aside.
Melt butter and add onion, celery, and carrots. Cook for 5-7 minutes, until softened, then add garlic, rosemary, basil, oregano, fennel seeds, chicken bouillon paste, and flour. Mix together to ensure everything is coated and cook for 3-5 minutes, until all ingredients are combined and fragrant.
Pour in chicken broth and place the chicken thighs, parmesan rind, and bay leaves into the pot. Bring to a boil and cover with a lid. Cook for 35-40 minutes, until the chicken is tender, almost falling off of the bone. Taste for salt and pepper and add accordingly.
In a separate pot, bring water to a boil and cook the egg noodles until al dente according to package instructions. Cooking them separately ensures that they don't become mushy.
Add cream of chicken soup and heavy cream to the pot and stir until completely mixed in. Then add in the shredded chicken, frozen peas, and corn. Cook until the peas are warmed throughout, about 5 minutes. Add a squeeze of lemon juice and remove from the heat. Taste again for salt and pepper and add as needed. Serve with cooked pasta noodles.
Notes
Use High-Quality Ingredients: Start with fresh vegetables and good-quality chicken. Also, if you have some, homemade chicken stock works wonders for depth of flavor.
Don’t Overcook the Noodles: Cook the noodles separately and add them just before serving, especially if you anticipate leftovers. This prevents them from becoming mushy or absorbing too much broth.
Season Gradually: Add salt and pepper in stages to build layers of flavor. Taste frequently as the soup simmers and adjust the seasoning as needed.
Use Bone-In Chicken: Simmering bone-in chicken (like thighs or a whole chicken) in the soup creates a richer broth. Remove the meat once cooked, shred it, and return it to the soup for the best texture and taste.
Skim the Fat: For a clearer broth, skim off excess fat or foam that rises to the surface as the soup cooks.
Control Thickness: If you like a thicker soup, mash some of the cooked vegetables and return to the soup.