What will happen if i put too much baking powder in the recipe?

[xxnerdyxgrlxx]

I'm making zucchini bread and it calls for 1/4 tsp of baking powder, i accidentally put in 1 tsp... yeah, i was on a roll with the 1 tsp ingredients and i totally didnt pay attention....

 

[bob1]

wont taste good
blow up
Hope this helps =)