In a large skillet melt butter and saute onions, celery and carrots over medium heat until just barely tender. Stir in poultry seasoning, garlic salt, pepper and flour and cook for 1 minute while stirring.
Add peas, potatoes, and chicken broth. Continue to stir until it comes to a simmer, reduce heat to low, cover and cook an additional 6-8 minutes or until the veggies are tender. Remove from heat.
Stir in cooked chicken breast and divide among 6 individual pot pie pans-- about ¾-1 C per pan.
Top with small spoonfuls of the biscuit dough, dividing the dough among the six pies.
Bake at 450 degrees for 12-15 minutes or until the biscuits are golden and no longer doughy on the bottoms. Serve hot.