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Which document class do you use? have you used special commands to formate your chapter title? A minimal working example (MWE) would be very helpful ... BTW: Welcome to TeX.SX! You may have a look on our starter guide.
although it's definitely desirable to know what document class you're using, if you put {\strut} between the two words on the second line, that will add "virtual" descenders to that line, which in turn will keep the lines spread apart evenly. i suspect that this title is being set while a smaller font is in effect, and is not ended by a paragraph break, which is necessary to "freeze" the baseline spacing for the larger font. if that's the case, then putting \endgraf at the end should also fix the bad spacing.
{\strut}
between the two words on the second line, that will add "virtual" descenders to that line, which in turn will keep the lines spread apart evenly. i suspect that this title is being set while a smaller font is in effect, and is not ended by a paragraph break, which is necessary to "freeze" the baseline spacing for the larger font. if that's the case, then putting\endgraf
at the end should also fix the bad spacing.