The basic rule is that good, pure food is halal. Allah invites people to eat of what is lawful and good (2:168), and only what the Quran and the Sunnah forbid is haram. Harmful or impure things are the exception.
از تو مىپرسند كه چه چيزهايى بر آنها حلال شده است. بگو: چيزهاى پاكيزه بر شما حلال شده و نيز خوردن صيد آن حيوان كه به آن صيدكردن آموختهايد، چون پرندگان شكارى و سگان شكارى، هرگاه آنها را بدان سان كه خدايتان آموخته است تعليم داده باشيد. از آن صيد كه برايتان مىگيرند و نگه مىدارند بخوريد و نام خدا را بر آن بخوانيد و از خدا بترسيد كه او سريعالحساب است.
آنان كه از اين رسول، اين پيامبر امى كه نامش را در تورات و انجيل خود نوشته مىيابند، پيروى مىكنند-آن كه به نيكى فرمانشان مىدهد و از ناشايست بازشان مىدارد و چيزهاى پاكيزه را بر آنها حلال مىكند و چيزهاى ناپاك را حرام و بار گرانشان را از دوششان برمى دارد و بند و زنجيرشان را مىگشايد. پس كسانى كه به او ايمان آوردند و حرمتش را نگاه داشتند و ياريش كردند و از آن كتاب كه بر او نازل كردهايم پيروى كردند، رستگارانند.
Hadith
Sahih Muslim 1015
Abu Huraira reported Allah's Messenger (ﷺ) as saying:O people, Allah is Good and He therefore, accepts only that which is good. And Allah commanded the believers as He commanded the Messengers by saying: "O Messengers, eat of the good things, and do good deeds; verily I am aware of what you do" (xxiii. 51). And He said: "O those who believe, eat of the good things that We gave you" (ii. 172). He then made a mention of a person who travels widely, his hair disheveled and covered with dust. He lifts his hand towards the sky (and thus makes the supplication): "O Lord, O Lord," whereas his diet is unlawful, his drink is unlawful, and his clothes are unlawful and his nourishment is unlawful. How can then his supplication be accepted?
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
What food is halal?
The basic rule is that good, pure food is halal. Allah invites people to eat of what is lawful and good (2:168), and only what the Quran and the Sunnah forbid is haram. Harmful or impure things are the exception.