bearded dragon, huge weight gain. is this normal?

ok so for the past 5 weeks my bearded dragon jayden has been gaining around 7-8 grams a week. i dont think ive been feeding her more than usual (i just put a dish of worms and crickets in her viv, which she munches on throughout the day). but when i weighed her this morning she has put on 21 grams. i mean im well pleased but is it normal for her to suddenly gain that much when she has only been gaining 7 grams the previous weeks