Iseći ću paprike.

Ću is the future auxiliary, meaning will in this sentence. It is the 1st person singular form of hteti used to build the future tense.

So:

• Iseći = to cut up / to cut
• ću = I will

Together, Iseći ću means I will cut.

Because ću is a clitic in Serbian. Clitics normally do not stand at the very beginning of a sentence. They usually come in the second position.

So these are natural:

• Iseći ću paprike.
• Ja ću iseći paprike.

But Ću iseći paprike is not standard.

The version with the infinitive first, Iseći ću paprike, is completely normal.

Yes. Ja ću iseći paprike is also correct.

The difference is mostly about emphasis:

• Iseći ću paprike. = neutral, natural
• Ja ću iseći paprike. = I will cut the peppers (maybe contrasting with someone else)

Serbian often leaves out subject pronouns when they are not needed, because the verb form already shows the person.

This is about aspect, which is very important in Serbian.

• iseći = perfective
• seći = imperfective

Here, iseći suggests a completed action: you will cut the peppers up, finish cutting them, or do it as a single whole event.

That is why iseći is natural in a sentence like this:

• Iseći ću paprike. = I will cut the peppers / I’ll cut up the peppers

By contrast, seći would focus more on the process, repeated action, or ongoing activity:

• Seći ću paprike neko vreme. = I’ll be cutting peppers for a while

So in this sentence, iseći is used because the action is viewed as a completed future event.

Because paprike is the direct object of the verb, and it is plural.

The noun is:

• paprika = pepper
• paprike = peppers / the peppers

In this sentence, paprike is accusative plural. For this noun, the accusative plural looks the same as the nominative plural.

Compare:

• paprika = one pepper
• papriku = one pepper as a direct object
• paprike = peppers
• Iseći ću paprike. = I will cut the peppers / peppers

Because Serbian does not have articles like a or the.

So paprike can mean:

• peppers
• the peppers

Context tells you which meaning is intended.

For example, in a cooking situation, Iseći ću paprike could easily mean I’ll cut the peppers. In a more general statement, it could mean I’ll cut peppers.

Because this verb ends in -ći.

In Serbian future tense, some verbs are written together with the future clitic, especially many infinitives ending in -ti:

• gledati → gledaću
• raditi → radiću

But verbs ending in -ći stay separate:

• doći ću
• reći ću
• iseći ću

So Iseći ću is the correct standard form.

Yes. That is also very common in Serbian, especially in everyday speech.

So you may hear both:

• Iseći ću paprike.
• Ja ću da isečem paprike.

They mean basically the same thing.

The difference is grammatical structure:

• Iseći ću = future with the infinitive
• ću da isečem = future with da
  • present-tense form

After da, you use a finite verb form:

• isečem = I cut / I will cut in that structure

Both patterns are important to recognize.

Usually just cut or cut up.

The verb iseći is fairly broad. Depending on context, it can cover:

• cut
• cut up
• slice
• sometimes chop, depending on what is being cut

So if the meaning shown to you is I will cut the peppers, that is a good basic translation. In a cooking context, I’ll cut up the peppers may be even closer.

The letter ć is a soft Serbian sound with no perfect English equivalent.

A rough idea:

• ć is softer than č
• in iseći and ću, both sounds are ć

English speakers often approximate it with something like a soft ty/ch sound, but it is best learned by listening to native speakers.

So in this sentence, pay attention especially to:

• iseći
• ću

Both contain that soft ć sound.