What would be the word(s) or an idiom to describe a situation where a person is portraying the situation as if it is a lot of effort to do something when in fact it can be accomplished with just a little effort?
"Making a mountain out of a molehill"
An idiom referring to over-reactive, histrionic behaviour where a person makes too much of a minor issue.
in phrase over-egg the pudding: Go too far in embellishing, exaggerating, or doing something. ‘if you're telling fibs, keep them simple—never over-egg the pudding’ https://en.oxforddictionaries.com/definition/over-egg
example: "I think he's over-egging it!"
A hoo-ha, from the Oxford English Dictionary
A commotion, a rumpus, a row.
The OED gives several examples; the one most pertinent to the OP's question is:
1971 Country Life 27 May 1328/2 Some of these lovely irises may..be grown..successfully without much hoo-ha.
great excitement or concern about something.
An example, which I made up, of the usage the OP is looking for:
Sandy made a big hoo-ha about preparing dinner, but all she did was microwave a frozen pizza and open a bottle of wine.
in a word, hyperbole - hy·per·bo·le. http://www.dictionary.com/browse/hyperbole