In a large skillet over medium heat, add 1 tbsp. butter and 1 tbsp. oil.
When hot and starts sizzling, add chicken cubes; season with salt and pepper. Sauté until just no longer pink, about 4 minutes.
Using a slotted spoon, transfer the meat to a bowl and set aside.
Add onions and season with ground sea salt; sauté for 2 minutes.
Add mushrooms, 1 tbsp. butter and ½ tbsp. oil; season with freshly ground black pepper. Toss to coat in fat and sauté for 2 minutes.
Add pressed garlic and sauté for 1 minute. Add can of cream of mushroom and milk. Increase to medium-high heat and stir until the mixture is smooth.
Add frozen peas and hot paprika; stir well. When the mixture returns to a simmer, set the timer for 2 minutes.
Return the chicken cubes including any accumulated juices and add Herbes de Provence. Stir, bring it back to a simmer and cook for 5 minutes. If desired, add cheese.
Spoon mixture over pasta, rice or mashed potatoes, and garnish with fresh chopped parsley.