Somewhere in my old Betty Crocker (? or was it Better Home & Gardens?) cook book is a tarragon chicken breast recipe - there are other spices, but have you thought about sorting through your herbs & spices shelves to remove the allergens and then running a search online for recipes that include the remaining herbs & spices? There was another that was an Island-style Chicken that was baked in orange juice with a bit of something else...I guess I need to go look at the cook book in the morning.
Can you have cinnamon? I seem to remember a baked cinnamon chicken recipe being a plot point on Little House On The Prairie - but have no idea what it might have tasted like...other than don't keep adding more cinnamon as it bakes, cinnamon can get quite spicy on the tongue!