Some sunnah and dua to read before eating snacks:

Sunnah as mentioned in below links:

Arabic Text

Click to play audio:

Pronunciation with Roman Arabic

Allaahumma baarik lanaa feehi wa atheimnaa khairam minh.

(The green 'a' and 'h' means you have to pronounce them boldly. Here green 'a' is not used as a word but it is called al-Fath in Arabic language. Two times green 'a' called standing fath. All pink and green marked letters are used here as Arabic language signs which help in better pronunciation.)

Note: Roman pronunciation still has complications, as some letters and their pronunciations are not interchangeable with English letters, so you need to learn and concern from someone who has the correct knowledge.